My Ex did quite a few things. Thankfully this was over 4 years ago.

She would get drunk, start a fight, and call me a bitch because I was trying to be nice to her. Then in the morning, she would apologize and try to make up for it. This happened about 3 times. She just couldn't hold her liquor without becoming down right mean.

One time she went to a company party a few blocks from where I lived. Didn't hear from her until the morning. She got drunk and drove home, 20+ miles away. This was a red flag of cheating, but I had no actual proof so I didn't want to jump to conclusions.

Things got stagnant and a few months later she admitted that she cheated, but she was raped. A few months later, I found out from one of her coworkers, the cheating was true but the rape wasn't. (Thankfully I didn't catch anything long term.)

After finding out, we decided to part ways - she picked up all of her stuff. I thought we were broken up so when she said "I'm going out with a friend." I didn't care. Later that evening, I asked her not to speak to me again since I didn't see the benefit.

And here's where she sealed the "my gf is crazy."

She goes to my place, calls me threatens to break down my door unless I let her in. Im not home. She threatens to break a window to get in. Then she says she did break a window and is sitting on my bed, waiting for me. I told her I was calling the cops. She stated that she didn't actually break in. There's like 30 minutes of this back and forth. Honestly, I was more scared for myself and what this would escalate to if I went home than I was about my possessions. She says she is staying there until I get home. At this point, I got to sleep and turn my phone off. I wake up to 10+ missed calls and voicemails to match. I get a text saying she slept on my patio.

Get home at noon, everything is okay.

She proceeds to stalk me, making contact once a week over the next few months. Finally, her brother as well as a friend tell her to stop contacting me. I had threatened to change my phone number... Which I guess was the ticket because she wanted to know she could still contact me. Finally, about a half year later - no contact. It's been a few years and, thankfully, I haven't heard from her.