We had an argument cause I wanted to set a boundary about their girlfriend being over all the time at our new place. They immediately got mad at me and said that if their girlfriend isn't welcome then their leaving. I had a break down and need up in a phyc ward for a few days cause I was suicidal.

Well when I got out I still stood my ground and kept my boundary. They got mad and have started asking super childish. Refusing to talk, glaring, slamming doors that sort of stuff. 

When I messaged them after they left and said that the behavior wasn't appropriate and that we needed to talk about this situation. They replyed back saying to stop texting them. They then immediately then texted me saying I'm disgusting and needy and too mentally unstable. And talked about how they've done everything for me and I'm just selfish.

I'm pretty torn up about this whole situation and it just hurts really bad for someone that was my friend to do this to me.