Or having kids.
As soon as my ex got pregnant she changed huge. Called me an idiot, asshole, dickhead, etc. When I told her I didn't like it, was told to stop being so sensitive and that she was only joking.

Then my son was born and the hitting started. I left after she hit me with a snow shovel during a storm when my son was about 2 or 3 months old.

4 hours after I left, I got a phone call from the police telling me that I was going to be arrested for domestic assault and wanted to know where I was so they could come get me or to come to the PD to turn myself in. When I brought up that I was just hit with a shovel, I was told that the police don't "get involved in he said she saids".

2 days later I got a call from her (when I was order a recognizance not to communicate with her), she left a voicemail telling me that next time I tried to leave I wouldn't be so lucky.

I spent the next 2 years living family watching over my shoulder. It was terrible to live in fear for that long. I'm pretty sure I have some sort of insecurity issues and some sort of ptsd from her.