Boyfriend drama

So my boyfriend has been super sneaky with his phone and what not. So sometimes when he’s got it open I’ll peak over every now and again just to see what he’s doing and sometimes there’s hella notifications coming through that are from females.. also likes a lot of females stories and pictures.. and they’re definitely females that look better then me… so obviously that fucking hurts my heart… and when I say something like “who’s this” he gets super mad about it and told me “I have friends that are girls I told you that I’m literally with you I don’t know why you don’t understand that ” mind you he’s never once told he he had female friends besides this one girl that’s literally a junkie and only hits him up for pills tbh. Also, I’ve heard the whole “she’s a friend” thing before and got cheated on PLENTLY of times…. I don’t know if I should believe the shit he’s telling me or if I should just leave now before we’re too deep in a relationship… we’ve been “together” for almost a year…. I need opinions…