My boyfriend and I have been together for about 3 months and we have a really strong connection because we were good friends for a year and a half before we got together. I knew when we were just friends that he made out with a girl that he said he wasn't sexually attracted to and he talked to me about feeling bad about it. He decided to tell her that he just wasn't looking for a relationship, which wasn't the case at all. So, I know that he is not into this girl physically, but he does love writing emails back and forth and he told me before that he really likes talking to her. Now that we are together their relationship feels threatening to me because I feel like she may think that he is still available. He never told her about me because he told a lie to her to begin with and supposedly she found out from his roommates that he has a girlfriend now and she called him out on that. I checked his email when it was left open on my computer one day and I found no such email. I also see no mention of me whatsoever to this woman. I told him that I read the emails, which didn't seem to bother him, but now I feel like he should at least mention me to her so that she knows. He swears that she already knows, but as I said before I found no proof of that. I want to trust him, but because I didn't see the email where she found out he had a girlfriend I am having a hard time with it. Now, I am having a hard time erasing this from my mind. It is making me feel really bad. Am I overreacting?