Boyfriend joining frat

Okay so my boyfriend and i have been together for 2 years and have a greay relationship. Last week he said how he is considering a fraternity which i don't mind. The problem is my bf is very mature and not a partyer, and likes commitment. He interviewed for a few and was telling me the very sexual interview questions. I understand frats may be a good fit for a guy who is not yet committed and wants to enjoy the college scene. I will support my boyfriend 100% but i just don't see him liking those types of people. Plus if he joins a frat he can't work every week like he does now. Does anyone have experience with this. I am trying my best to not give my opinion but its bery hard.