This is just two people who occasionally have sex like two normal consenting adults. It isn't a habit. It isn't a thing. College era Casey/Derek.

When Derek, Casey, and Edwin are alone for the weekend things heat up when Derek catches Casey masturbating. SOlO F, Oral M/F Casey/ Derek , Casey/Edwin in a later chapter

"Derek. Do you think about me a lot when you, um you know?" "You mean while I jack off? Yeah to be honest, you're all I can ever thing about." DEREKXCASEY Find links to clothes on profile.

But he must be as embarrassed as she was. They were almost siblings after all; and to find your sister doing...that...had to rank off-the-charts on every embarrassment scale. Derek/Casey

The night before we left – Derek for Vancouver and an exciting life of professional hockey, and me for University of Toronto and spectacular academic achievement– there was… an incident.