My Father’s Girlfriend Becomes My Mistress: Part 1

     Michael sat on the couch, staring aimlessly at the TV. A year had passed since his mother had died, but the pain hadn’t lessened. If anything, it seemed to hang heavier with each day, like a constant, unbearable weight pressing on his chest. Everything in the house reminded him of her—the scent of her perfume that still lingered in the hallway, her favourite blanket draped over the arm of the couch, and her laughter that used to fill the kitchen.

Now, there was nothing—just a dull, aching silence.

Except for one thing: his father’s new girlfriend, Sofia.

     Michael clenched his fists, his knuckles going white at the thought. His father had started dating someone new just a few months after his mother passed, and Michael couldn’t stand it. How could he move on so fast? It was like his dad had forgotten his mom, like the love they had meant nothing. Worse, this new woman—Sofia—kept texting him, trying to be friendly, trying to get to know him.

     He didn’t care who she was or where she came from. She wasn’t his mom. To him, she was just a stranger. Another invader into what was left of his family.

     His phone buzzed on the table beside him, and Michael glanced at it out of habit. Sure enough, it was a text from Sofia. Another polite message, trying to reach out. "Hey, Michael! I’d love to hang out sometime and get to know you. Maybe we could do dinner or coffee?"

     He rolled his eyes and tossed the phone aside, ignoring it like he had ignored every message she’d sent. Why should he care? Why should he make an effort? His father was the one dating her, not him. He wanted no part of it.

Later that evening, Michael’s dad came home, looking a little nervous.

     “Hey, buddy,” his dad started, his voice cautious. “Sofia’s coming over for dinner tonight. I thought it’d be nice if you two could finally meet in person.”

     Michael felt his stomach tighten with irritation. “Why does she care so much about meeting me?” he muttered, not looking up. “It’s not like I asked for this.”

     His father sighed, clearly weary from having this conversation again. “She cares because she knows how important you are to me. She wants to get to know you, Michael. She’s a good person.”

     “Yeah, sure,” Michael muttered, pushing himself off the couch and heading to his room. “Whatever.”

     Hours later, the smell of something delicious wafted through the house. Despite himself, Michael felt his stomach growl. He could hear his dad and Sofia talking and laughing softly in the kitchen, and curiosity started to gnaw at him. He hadn’t seen her in person yet; he had only heard about her and seen her profile pictures on social media. She was Colombian, or so his dad had told him, but that was all he really knew.

     After hesitating for a moment, Michael decided to head to the kitchen. He figured he might as well get this awkward dinner over with.

But when he stepped into the doorway, he froze.

     Sofia was standing at the stove, her back to him as she stirred a pot. She was nothing like what he had imagined. For some reason, he had expected someone plain and unassuming. Instead, Sofia was a bombshell—a vision of curves and confidence that made Michael’s breath catch in his throat.

     She was wearing a tight, red dress that hugged her body in all the right places, showing off her thick, hourglass figure. Her blonde hair cascaded in loose waves down her back, contrasting with her golden-brown skin. But it was her body that got his attention—her massive, thick ass stretched the fabric of the dress with every movement, and her large, heavy breasts seemed almost too big for the tight neckline. She looked like she had stepped out of a magazine, and for a second, Michael couldn’t believe his dad was dating her.

     Sofia turned around, and their eyes met. Her full lips curled into a warm, genuine smile. “Oh, you must be Michael,” she said, her Colombian accent soft but distinct. “It’s so good to finally meet you in person.”

     Before Michael could respond, Sofia crossed the room and wrapped her arms around him in a hug. Her body pressed against his, and he could feel the firm softness of her breasts pressing into his chest. The sensation was electric, and despite himself, Michael felt a sudden, intense arousal in his pants. His body reacted instantly, and he struggled to conceal the growing bulge in his pants.

     Sofia’s embrace lingered for a moment longer than necessary, her body warm and inviting against his. The feel of her against him was both exhilarating and mortifying.

     She wasn’t fazed by his lack of enthusiasm. Instead, she gestured toward the table, where plates of food were already laid out. “I made dinner—some traditional Colombian dishes. I hope you like it. Your dad told me you were a bit of a foodie.”

     Michael sat down at the table, trying not to let his gaze linger on her body. He didn’t know what he had expected, but this wasn’t it. How was he supposed to stay mad when she looked like that?

     Dinner went on in relative silence, with Sofia and his dad making small talk and trying to include Michael in the conversation. He answered with one-word responses, still annoyed, but less sure of himself now that he’d met her in person. She wasn’t what he had imagined—she wasn’t some villain trying to take over his mother’s place. She was way more attractive than he was prepared for.

     As they finished eating, Sofia glanced at Michael with a soft, understanding expression. “I know this is hard for you,” she said gently. “I can’t imagine how you must feel. I’m not trying to replace your mom, Michael. I just want to be a part of your dad’s life—and yours, if you’ll let me.”

     Her words hit him harder than he expected. Michael shifted uncomfortably, unsure how to respond. The anger he had been clinging to so tightly suddenly felt misplaced. Sofia wasn’t trying to push him out. She was just... there. And despite himself, he found it hard to hate her for that.

“I... I’ll think about it,” he muttered, pushing his chair back and standing up.

Sofia smiled softly. “That’s all I ask.”

     As Michael retreated to his room, he couldn’t shake the image of Sofia in that tight red dress. He hated to admit it, but his resentment was starting to melt, replaced by something he wasn’t ready to acknowledge yet.

     The unexpected encounter with Sofia had left him reeling. Once inside his room, he shut the door and sank onto his bed, feeling the weight of the day’s events crash down on him.

     He lay back, staring at the ceiling, trying to make sense of his feelings. The image of Sofia, with her striking features and the way she had hugged him, was vivid in his mind. He replayed the moment over and over, her warm embrace and the softness he had felt against his body.

     Sofia's voice echoed in his thoughts, smooth and melodic with that unmistakable Colombian accent. He could almost hear her whispering his name, the way her lips had curved into a warm smile. It was all so overwhelming.

     There was only one thing he could do about the massive bulge in his pants so he slipped down his trousers and underwear and began to masturbate to the thoughts of his meeting with Sofia, he thick ass in the dress, her firm big breasts pressed against him, her perfume.

     He even began to whisper to himself as if he was having sex with Sofia, telling her to keep fucking him with her Colombian body and let him suck on her nipples. He felt himself getting close to orgasm.

     You are almost as large as your father a voice came from his door Michael spun his head to see Sofia standing in the doorway with her phone pointed at Michael.

     Michael panicked and to make matters worse exploded cum all over his chest and face as he came from the unexpected situation.

     Sofia smirked as she lowered her phone, a plate of cake in her other hand. "I came upstairs to give you this," she said, her voice dripping with satisfaction. "But you’ve just given me all the leverage I need. Your days of being rude to me and ignoring me are over, Michael. I bet your father wouldn’t want to see this video of you, masturbating to the thoughts of his new girlfriend."

     Michael’s face turned bright red as he scrambled to wipe the cum off his chest and face, pulling up his underwear and pants in a panic. "No, please," he begged.

     Sofia’s expression hardened. "I don’t condone a disgusting habit like masturbating, Michael," she said sternly. "I will put an end to this disgusting habit tonight after your father goes to bed." With that, she closed the door behind her, leaving Michael trembling with fear and embarrassment.

     Michael lay in bed for the next few hours trying to figure out how he could convince Sofia not to show the video to his father. It would be the most humiliating experience of his life. He climbed out of bed and went into his en-suite bathroom to brush his teeth and go to the toilet.

     When he emerged he froze on the spot as Sofia was sitting at the end of his bed in see-through red lingerie and stockings, her thick firm curvy body on full display.

     There was nothing Michael could do to hide the erection that appeared in his underwear as he was wearing nothing else. He went completely red in the face. Here was his father's thirty-three-year-old Colombian girlfriend making him rock hard in his underwear.

     Sofia smirked and teased him saying awww, does the little wanker like what he sees? Your father does anyway. After dinner, I had a shower and spent the last two hours sucking his cock and fucking his brains out as he played with my soapy firm tits.

     Michael couldn’t believe what he was hearing. He was listening to Sofia describe all the hot sexy things she was doing with his father and his cock was as stiff as a rock. 

     You see, Michael your father treats me like a princess and I love him so much. I will repay him by being his personal slut in the bedroom and making all his sexual fantasies a reality. But you are an arrogant, selfish little boy who has no respect for women or consideration for others.

Michael tried to reply but she cut him off with a stern glance.

     Now, lie down on your bed. It is time for you to stop this nasty little masturbating habit. Your father hasn’t had to masturbate since we started dating. I make sure to drain his balls at least three times a day to show how much I love him.

     Michael sat down on the bed and Sofia pushed him down onto his back before straddling him. He was rock hard in his pants as she took control. Michael was a virgin, and this was the closest he had ever gotten to sex..with his father’s girlfriend.

     She pushed his hands up to the back of his bed and he felt black fluffy handcuffs cuff his hands to the top of the bed. She gets back off him and cuts away his underwear with a pair of scissors. She then cuffed his ankles to the bottom of the bed so he was fully at her mercy.

     Awww, look at the cute little cock on display. It was smaller than your father’s massive thick shaft she teased.

     I bet you’d love for me to do to you all the things I do for your father,” Sofia said, her voice dripping with seductive confidence. “Imagine me using my tits to wank you off, just like I do for him. Picture me taking your cock in my mouth while you drive us home from the mall, or letting you spank as you take my anal virginity.”

     But no, it is time for you to learn to respect me and pay for being so rude to me. She walked over to the chair near the door and picked up a small wooden box before approaching Michael.

     She removed this small intricate steel device that Michael didn’t recognise before taking his cock and balls in her firm hand.

     Michael couldn’t believe what was happening. Here he was naked and cuffed to his bed by his father's girlfriend with her hand and long nails wrapped around his cock.

     She stroked him a few times which elicited a moan of pleasure from Michael. She then dug her fingernails into his balls so hard he thought she was going to puncture them. Just as he yelled out she stuffed Michael’s underwear into his mouth.

     He began to cry and scream into the underwear as her nails dug deeper and deeper into his balls. Just as he thought they were about to pop she stopped. He then felt the cool metal device go around this cock and balls before he heard a small click of a lock.

     "There, now you’ll show me the respect I deserve," she teased, her voice laced with a playful dominance as she stepped back and uncuffed his ankles and hands.

     "If you ever want to cum again, you’ll follow my commands and treat me like the princess I am. Understand?"

     "Yes, Sofia," he whispered, his voice trembling with a mix of relief and desperation, hoping she would leave his room.

"That’s 'Yes, Mistress' when we’re alone," she corrected, her tone firm yet enticing.

"Yes, Mistress," he murmured, completely surrendering to her will.

     "Good," she smiled, her eyes glinting with mischief as she stood up. With a deliberate motion, she dropped the key to his device into the soft embrace of her lingerie-clad cleavage. "I think we’re going to be the best of friends from now on, Michael," she winked, her gaze lingering seductively before she turned and exited the room.

     Michael could hardly believe what had just transpired. Sofia, this Colombian goddess, had just secured a metal device around his cock and balls and taunted him with the sexy things she was doing with his father.

     Despite the humiliating situation, he couldn’t deny how irresistibly attractive she was and how easily she ignited his desire. "What does she have planned for me?" Michael wondered, his mind racing with anxiety and anticipation as his cock tried to swell in the steel device causing him intense pain as there were small spikes on the inside of the cage.

     The next morning Michael awoke to a massive pain in his cock and balls. He looked down at the steel device encasing his cock and balls and realised what happened the night before hadn’t been a dream. He tried to push and force the device off his cock and balls but realised they weren’t coming off without the key.

     His morning routine of a wank in bed before a shower was not going to happen today. He felt his balls ache as they were used to being emptied every morning and night.

     Just then, his phone buzzed. He glanced at the screen to see a message from Sofia, accompanied by a photo. "I’m outside sunbathing and would love a drink, please," her text read. The photo showed the key to the device dangling temptingly, just inches from her smooth, sun-kissed skin.

     Michael’s breath hitched as he took in the sight. He knew he had little choice but to comply with her request. The thought of her sharing that compromising video with his father—and withholding the key—was a powerful motivator.

     Michael’s breath caught in his throat as he looked at the image. The sight of Sofia's curves, the way the red fabric hugged her shapely hips and full breasts, made his predicament even more unbearable. He quickly made lemonade, his hands shaking slightly as he squeezed the lemons, imagining the sensation of relief he could never quite reach.

     Carrying the glass outside, he approached Sofia’s sunlit throne. She lay on a lounge chair, her skin glowing under the sun, and her body barely concealed by the tiny bikini. Michael’s heart raced as he saw the key peeking out from the edge of her bikini top, a tantalizing reminder of what he was missing.

     “Hello, Michael,” Sofia purred, her voice dripping with seduction. “Thank you for the lemonade. It’s exactly what I needed.”

     She took a slow sip, her eyes never leaving his face. “But remember, if you want this key back, you’ll need to do more for me.”

     Michael’s face flushed as he struggled to maintain his composure. The sight of Sofia’s flawless body, and the way her bikini accentuated her curves, only made his predicament more intense. His pulse quickened, and he shifted uncomfortably, the chastity device pressing painfully against him.

“Yes mistress,” he replied, his voice barely a whisper. “Just tell me what you need.”

     Sofia stretched languorously, her bikini-clad body rippling with the movement. “I need some sun cream,” she said, her tone teasing. “And don’t forget my MP3 player from inside. Also, a light lunch would be lovely.”

     Michael nodded, his arousal palpable as he hurried back inside to fetch the items. Each step was a reminder of the frustration he felt, the device a constant, aching presence.

     Returning with the sun cream and MP3 player, Michael could barely hide his discomfort. He prepared a fresh salad with grilled chicken and fruit, his thoughts racing with the idea of Sofia’s playful taunts. The thought of her teasing him about the device only intensified his yearning, making every task seem like an agonizing test of his willpower.

     As he was busy in the kitchen, his father walked in, surprised to see how Michael was doting on Sofia. “Michael, I didn’t know you had it in you to be so attentive. This is quite impressive.”

     Michael, already flustered by his predicament, forced a smile. “Just trying to be helpful. She’s been great to me, so I want to make sure she’s comfortable.”

His father nodded, clearly pleased. “Keep it up. It’s good to see you being so considerate.”

     With the lunch prepared, Michael carried the plates outside, trying to ignore the intense pressure in his groin. Sofia’s eyes lit up as he set the food down on the table beside her.

     “Thank you, Michael,” Sofia purred, her sultry smile sending a thrill through him. “Everything looks absolutely delicious.”

     She turned to Michael’s father, her gaze lingering on Michael with a hint of mischief. “Could you do me a favour and keep this key in your wallet? Just in case I misplace it in the garden,” she said, her wink sending a shiver down Michael’s spine.

     Unaware of the underlying tension, his father cheerfully accepted the key and slipped it into his wallet. Sofia’s eyes stayed locked on Michael, her teasing gaze promising more to come.

     As she began to eat, Sofia couldn’t resist further teasing. She leaned back, giving Michael a clear view of her enticing curves. “I must say, this is quite a treat,” she purred. “But remember, if you want to feel any reward, you’ll have to keep it up. Discipline is so important Michael.”

     The playful glint in her eyes and her suggestive comments made Michael’s situation even more unbearable. Every movement and every glance from Sofia heightened his arousal, making the chastity device feel like even crueller torture.

     As the day went on, Michael was consumed by a mix of frustration and desire. Sofia’s teasing had him on edge, and the constant reminder of his locked state only made him more desperate for relief. He couldn’t help but wonder what Sofia had planned next, and how much more he could endure under her playful dominance.

     Michael lay in bed, his body spent from a whirlwind day of Sofia turning him into her bitch. He was utterly exhausted, teetering on the brink of madness, knowing he would be denied the orgasm he desperately craved. The relentless, unforgiving chastity belt was a constant reminder of his frustration, ensuring that tonight, and every night, he would be left yearning to cum.

     When would this end? When would she let him cum? Michael wondered as he lay in bed, his balls aching, his cock being pierced by the sharp pins inside the chastity belt.

     All he could do was lie there, his body thrumming with sexual desire, as he listened to the intoxicating loud sounds of Sofia’s moans of pleasure spilling from his father's bedroom. Each moan and gasping cry of orgasm from Sofia in his father's bedroom only deepened his horniness, amplifying the aching torment of his confinement in the steel chastity belt.

What had she planned next?