I (23M) broke up with my girlfriend (21F) of 3 years because of something she did after a very heavy drinking night, but she won't move or see me. Now I want to end it for good.

Two weeks ago, I went on a weekend drinking trip with my brother and some other friends. I drank a lot more than I usually do, and did it over a very short period of time. This led to me not thinking very clearly and doing some stuff I probably wouldn't normally do. One of the other guys in our group was also being pretty reckless and talking about other girls. I hooked up with one of the girls in our group, but later felt bad about it and really didn't want my ex to find out, since we had been together for a while. <br><br>The next morning, I woke up really bad, but I knew that I should check my phone to see if my ex had called or texted me. It was really late morning, and I had no response from her until I saw a text at 1PM that read, "If you've been fucking that skank, I want a divorce, and I'll take everything." I was absolutely floored. I had never seen her this upset before, and I was pretty sure I hadn't even sent her any angry messages. I tried calling her, but she would not answer. I went home and waited all day for her to call me back, but she didn't. The next day, I went over to her place, and she had a few suitcases packed, and told me I had 24 hours to vacate the apartment, even though it was in both our names. I was really upset, and I wanted her to tell me what she knew. But she wouldn't. <br><br>I went home, cried a lot, and wrote her a long text. It was mostly me saying I never wanted to hurt her, and that I really hoped that she hadn't jumped to such a harsh conclusion. I told her that I would wait until she felt calm, but I really wanted to know what she had heard, and told her that she was being unfair to think the worst of me. I told her that I understood if she wanted to end things, but I really needed some closure before I could be OK with it. She never even acknowledged my messages. She's changed her profile picture on all her social media accounts, and has completely blocked me.<br><br>I've given it three weeks, and I'm seriously thinking of ending it for good. But at the same time, I don't know if I can ever move on from someone who doesn't think I'm a decent person. What should I do?