<human>: Can you condense the text into a few key points?

This girl and I have been hanging out for a couple of months now. We've known each other for about a year but we just recently started seeing each other. Things were going well lately, like really really well. We were getting pretty close. Then the other day she drops a bomb on me: she told me that she's been seeing this other guy for about a year now and things are getting kinda serious with him but they aren't necessarily together either. She said that things seemed to be getting serious with us and she felt it was right to let me know. I wasn't really angry because we aren't necessarily "together"...ok that's a lie I'm pretty pissed. But I didn't really show my anger when she was telling me this. I listened, we talked, and she said she really likes me but she likes him too. She says she's confused and doesn't know what to do. I told her I needed some time to figure it out and before I left I gave her the biggest kiss any person could possibly give another human being. So I've been racking my brain. Should I just cut ties now before we get any more attached?
<bot>: been dating a girl for a few months. apparently been seeing a girl who's been seeing another guy for a year. what to do, what to do?