So my boyfriend and I were just coming up to the 3 year mark, and I've just found out today that he's cheated on me. The person he cheated with actually directly contacted me to let me know, they said that they only found out about me after they had met up with him and they wouldn't have gone through with it had they have known. So I confronted my boyfriend about it who then repeatedly lied until I showed him the evidence when we met up in person. He supposedly was saying the reason for lying was so that we could talk it out in person rather than over text... But he finally admitted to it and has apologised and is begging to get back together, but I'm not sure. He seems sorry enough I just don't want to put myself into a situation where it happens again. But the most interesting part is that he was bi curious so cheated with a man, he's now claiming that he didn't enjoy it at all ( they didn't have sex, just foreplay) and is identifying as straight saying that it wasn't an enjoyable experience and he has no desire to be with a man again. I'm just shocked because he had always showered me with affection and this is the last thing that I thought he would do :/ we're both moving on to different university's and I'd rather not spend that time paranoid about what he's getting up to...