<human>: Can you condense the text into three sentences or less?

So, my girlfriend and I are still in a relatively new relationship going on three months. Today, she casually mentioned that she likes a guy she knows. I was hurt by this, but she got kind of defensive and said something along the lines of "Well I have feelings for lots of people, as long as I don't act on it it's okay".

I just can't agree with this statement. I mean, I know I don't have feelings for anyone else. I might just be acting stupid, but the whole thing just has me questioning our relationship. I have an anxiety disorder that constantly has me questioning things but I feel like this is justified. I'm just worried that she isn't really interested in our relationship anymore if she is thinking about other guys as much as it seems, and I'm worried about her  and the possibility of her cheating. Again, I might just be overreacting but I would love to hear thoughts on this from other  people.
<bot>: Girlfriend has feelings for other people, and thinks that that is okay while in a relationship. This has me questioning our relationship/her faithfulness.