<human>: Give me a shortened version of the text

My girlfriend and I have been dating for a little over 10 months. It's all been really great. It came out that, prior to our relationship, she slept with someone who she is currently friends with. About 7 months into the relationship, he told her he had feelings for her, but understood that she was in a relationship. According to her, he loves her. She reciprocates none of these feelings for him and has said she has dealt with and knows how to deal with friends who are romantically interested in her. Since he admitted this, her contact with him decreased pretty dramatically.

This weekend, she's going to a party in her hometown (we are both in different places for Christmas) where she will be staying the night at the same place as the guy who's interested in her. She said she'd keep in touch throughout the night and call before she sent to bed and that there was a guest bedroom and couch, so they would definitely be in different places. They are staying at a mutual friend's place for the night as neither have any place to stay. I guess I'm pretty irked by the situation, but I'm not sure if I should be. Should I be? Everything about her character suggests she would never cheat, but for some reason I can't get it out of my head. Is there anything I can do about this situation? She doesn't want to give him up as a friend, and I can understand that. I can't tell her to do that. I've thought about this a lot and can't figure out what to do. I mean, she never had to tell me that any of this was going on as this guy was from her hometown, but she chose to anyway. That seems like a pretty good sign, right?
<bot>: my girlfriend has a friend who is romantically interested in her and I don't know what to do or if I should even be worried.