I’m 19 years old me and my boyfriend (20) have been together since I was 15 . He lies About his buddies ( saying he is with his family but is really just with his best friend) (which is my cousin) anyways he never lets me see his phone because he says he has messages with his buddy’s ? Also he had a Snapchat a while back and I found out he had two asked him to delete the app and he did and recently he had his phone in his hand and I seen the sc app and he got all mad because I seen it and continues not to give me his phone . I trust him not cheating on me . But now I just don’t know . What do u think I should do .