He Cheated.

I have been with my boyfriend for almost a year now. Like any other couple we have had our share of arguments. But for the most part we are really good together. We met 3 years ago in highschool and have always been good friends. I honestly love him and I know he loves me. Here's the problem, the other day I went through his text messages (which I had never ever done with any of my past bf and certaintly not with him) and saw he had been texting another girl. I read them all and in them he tells her how me and him went to go get tested for stds and how he's just waiting for the results. Why would he tell her about it? Something so personal why would he share it with her. (May I add they had a fling before me and him were a couple) so I confronted him about it and he confessed to me that he had been sexually active with her in the beggining of our relationship. And how she had recently contacted him to let him know she had an STD. I was devastated and cried so much and I didn't know what to do. He begged me to forgive him and he told me how much he loves me and how that was a long time ago. He told me he didn't want to loose me and that he knows how badly he messed up. Also our test results came back and we both tested positive for chlamydia. I really truly believe he is sorry and I really believe he loves me. But I can't stop thinking about the fact that because of her I now have an STD. I cannot stop thinking and imagining them together and it kills me and I don't know what to do. How do I deal with this? I want to be with him but I just don't know how to get past this. I need advice. I need help dealing. Idk how to act and how to feel. I'm completely lost and sad.
Harasdonon Harasdonon
18-21
May 23, 2012