It's pretty common in uni I've done that a couple of times, it's a lot more common there. Also u feel really shit if you did it with someone you share a class with or with a friend unless your a fuck boy. Real fuck boys pass around girls every other week tho. Also the guy he sleeps with here...
I've binged through the web novel and it's just a massive nothing burger. The characters haven't grown in the slightest and it's frustrating. The MC refusal to think despite being mentally 20 years old piss me off sometimes. And I love how much of a garbage this series is.