I have been dating my girlfriend for over 2 years we both go to a small college. We both went to different colleges over the weekend to see our home friends and go out. While out my girlfriend had told me she had seen and said hi to a guy we were friends. For background we both play sports and the guy was on my team. My gf had a crush on this guy before we had started to talk. Obviously I hate her seeing guys she liked before me but at this point I wasn’t upset. She said she had just said hi and moved along since we hadnt seen him in over a year since he transferred out of our college. She promised they didn’t speak or anything and that it was no big deal. A few days later we were hanging out and I saw his name on her texts. I asked to see what they were talking about. Turns out she lied to me. She had caught up with him while at this party. I guess when they first said hi the guys girlfriend was mad at him and they had went upstairs. She had then texted him and asked “how it’s going” he replied with “i’ll promise i’ll be back in 10 I wanna catch up unless your leaving” and she said “don’t worry we’re staying”. then a few hours later after they had caught up she texted him “can you just not tell [me] about this, he will be annoying about it, pretty please”. he then responded “didn’t plan on it, your okay, it was good catching up hopefully i’ll see you soon” and she finally said “ik same we will def keep in touch.” I’m not really sure how to feel about all this. I don’t think they did anything considering his girlfriend was at the party somewhere but I still just think it’s weird that she would lie to me and promise she didn’t even speak to him when she was texting him. I also think it’s not right to tell another guy not to tell me something like they’re keeping secrets. Just feeling mad about the whole situation.
TLDR ; My girlfriend went out last weekend to a frat, saw a guy we whom she used to have a crush on. Lied to me about the exchange and I finally found out. I need advice on how I should take this.