<human>: Can you give me a shortened version of the text?

My boyfriend and I started dating in April of 2012. I found out that last night that my boyfriend was asked out on a date back in March of this year. He says that they went to get coffee, and texted a few times after that, but it never went anywhere. He claims that there was no physical contact and he didn't even pay for her coffee. It doesn't sound too bad, but I am worried. My boyfriend wasn't the one who told me about it. His brother told me while drunk. When I asked my boyfriend about it, he said it was around a time in our relationship when we were having some problems. The time period he is referring to was before Christmas, but then he mentioned it was around spring break, so that shows he was lying about the time it happened which leaves me wondering what else he is lying about. I asked his brother and his best friend if they could tell me more about it, but they are both saying they don't know any details. I don't know what to do. Is it even that bad? If it turns out he really didn't do anything more than get coffee with a girl and that's it, is it worth forgiving him? I can't decide, and I can't tell if I am overreacting.
<bot>: My boyfriend of 2.5 years went on a date with a girl several months ago. He claims nothing physical happened between them, and I can't tell if I am overreacting by how upset I am over this.