Pretty new to redpill so sorry if I dont the terms right.

I was at a friends house playing games and drinking with him and my ltr. Quite a few drinks in my friend grabs my ltr's phone and started texting a guy named austin - on her snapchat. (I've heard of this guy before, he apparently goes and crys about his problems to her and she does the same(she also has before said that she hates him?)) Anyway my friend texts "fuck you" and things like that. My ltr starts crying hysterically over it and saying "I need him." This pisces me off so I get my shit ready to leave(thinking it's over between us), my friend stop me at the door and tells me to talk to her instead of leaving. We get into a big verbal fight where my main question is why is crying so much over a guy that isnt me and why havent I see her react this way towards me or anyone else I know? My friend leaves for a while and I go to talk to my girl. I ask her why she was crying over this guy like that and shes never acted like that towards me. She tells me that shes always been afraid to show emotion and that I dont know how much shes cried to Austin and above said friend about how much she "fucking loves me" she apologizes and says she overreacted and long story short we end up making up. The next few days she talks about how much shes into me and how much she loves me.

Now I'm no dummy and I honestly dont be believe she was cheating on me, even with that I was ready to walk out on her that night. Please help me understtend if I played my cards right I honestly want to know what I should have done and what I should do now at this point.

TLDR: girl started crying over a guy she said she hates. I get pissed off and start yelling. She apologizes and says that she cries to this guy about how much she loves me.