Me and my boyfriend have been together for about a year and a half now and last January he broke up with me. And we got back together in Feburay. The day that he broke up with me he cheated on me and kissed another girl, he was trying to get with her I guess when we were together, secretly behind my back he was talking to ger while he was at work. I found a letter that he wrote to this girl in his e-mail that admitted him cheating on me and kissing her. He denies that he wrote this email and that he cheated on me. And he always gets upset when I try talking to him about it. After I found out about him cheating on me I find it really hard to trust him. I'm always afraid that he will cheat on me again with some other girl. I just want to trust him and him be trustworthy. I don't want to be worried or afraid that he's going to do something like this again but, I don't how to not worry or be afraid. Can anyone help me?