A virgin but all I can think about is sex???

Ok ok ok, it sounds crazy and I’m kind of frustrated with myself. I’ve been masturbating for the past 4 years and recently I’ve really been getting into it. (Actually inserting, trying different positions, getting fully naked, etc.) but school just started and I’m back to being around all these boys and all I can think about is...SEX!!! I don’t know what my deal is but I’ll sit in class and zone out because I’m thinking of all these different sex scenarios with these guys in my classes. I don’t know if its because I just haven’t been in a relationship in 2 years and I’m ready to get back in the game or what. I just feel like masturbation isn’t doing the job anymore. I’m starting to feel guilty about it.