help a sister out

So I was with my boyfriend for 2 and half years. I was just recently diagnosed with pcos. we came to a agreement that we were going to try and convince. I'm not sure if that pushed him away or something but he started talking to me very rude and like her didn't care anymore. I couldn't deal so I left but we got back together for a few days to talk and I went through his phone and found that he tried getting with someone off craigliats. And yet I still wanna try but he is being so mean and won't talk to me. I have not been alone since 8th grade and I kinda think that will be the best but I have never had a break up effect me so much. I'm hurt I'm lost and I want nothing more then to be with him even tho he messed up. I mean we were trying to start a family. I just need someone to set my thoughts right and maybe some sense talked into me lol someone anyone