I was discussing character details with Rebecca early on in the show, when she told me a specific thing about Lars and Sadie's dynamic: Lars was a virgin, Sadie was not. And Sadie didn't particularly like her first experience.
Taking this information to my desk, I drew this conversation between Lars and Sadie: Lars has just been told that Sadie isn't a virgin. He reacts with intense jealousy, but while doing so he blurts out his real feelings: He thinks HE could get her to enjoy it.
I showed Rebecca and she declared it canon lol so I guess this semi-officially happened on their game night.
This isn't super NSFW because it's just conversation, but if it does make anyone uncomfortable I can put it under the NSFW tier!