Saw that in college dorm life where a girl dumped one boyfriend and took up sleeping nights with his roommate
Well, that is kind of normal for college kids. I don’t find that as wrong as married coworkers hooking up with one another or cops forced to spend the whole day with a hot woman not his wife.
Even I did that roommate switch once; it was awkward but we all lived. It’s a dumb thing for young people to learn from.