Baskadia

I just need a place to vent. So last weekend, I caught my girlfriend cheating. She was coming out of a bar with another guy, and then they started hugging outside and inside of the car. This lasted for about 4-5 minutes, as she pulled off to leave I stood in front of the car before she could drive off, her jaw dropped to the floor and I walked away. She then calls me, and is mad that I lied to her about being at work that night (I left early) and using her location to find her at a bar with another man. I told her she is just trying to flip the wrong she did on me when she was the one out cheating. She says she didn't cheat. Earlier that night when I was leaving work because i felt ill, i called and texted her. No response. Then I sent her a text saying "Emergency", she called back in two minutes. I told her "I feel really sick. I left work early and I tried to drive home but I can't. Can you come get me please? I'm on the side of the road off the interstate." She said "No, I can't. I'm at a pool party and I've had something to drink and I don't want to drive. I can call you an uber or something." I was really disappointed, and just slept on the side of the road for a few hours until i felt better, this was around 11pm. At 2am, I wake up, no calls or text from her, so I called her when I started to feel better when I noticed she was still out by the sounds in the background of the phone call. She got mad at me for expecting her to drive to help me on the side of the road when she said she had a drink, and at this point she is yelling saying "I was at a pool party, and I had a drink, I offered a solution. Leave me alone about it, I'm on my way home." I found it very odd she was yelling at me for something I needed her help with, I've never asked for help at all in the 3 years we were together. Plus, i noticed her car sounded like she was parking somewhere. So, I pull up her location that she shared with me years ago but never used. She wasn't on her way home, she was at the bar with some dude. When I got there around 3am, and saw them together by the car, I took pictures and video of what I saw. She now is trying to deny that I saw what I saw, she said I violated her trust and privacy by stalking her (basically coming to where she said she wasn't), and says she met him that night, all she did was hug him goodbye, and when he tried to kiss her neck she pushed him off. From my video, it didn't happen that way. They were hugging each other for minutes and it looked like they were kissing. She denies it, and refuses to accept what I saw with my own two eyes standing right behind them and with proof. She now says I was in the wrong and is mad at me. How is this possible for her when I am the one that is mad and should be pissed.