<human>: So here is the scenario. I (25) moved and got together with an (21) ex girlfriend. Currently dating about 9 months. We had a fine relationship before, so I figured it would be the same. We have an apartment now with a friend. Stress has been high lately as my GF bought a pet that requires lots of maintenance pretty much against my will.

Now the problem. My girlfriend has an insane, emotionally abusive mother. And I have noticed while I confront problems in my relationship with calm communication, my girlfriend jumps to insults, and threatens to kick me out. Its actually almost word for word what her mother would say to her.

Well, I beleive in healthy relationships so I pointed out what she was doing, and she claimed I wanted to change who she was, and that was just the way she is, and If i don't like it, more threats. This is bullshit in my opinion, reacting to drama like a high schooler is not a personality trait, it is immaturity.

The big kicker is my old ex is moving to town, and we are very good friends. I wanted to go to her house warming party and welcome her here, but my girlfriend threw a shit fit and pretty much held the relationship hostage, threatening to kick me out of I went, or that I had to bring her.

I am somewhat low on money, and cannot go and find another apartment just yet. Any tips?

Can you condense the text into three sentences or less?
<bot>: Girlfriend reacts to conflict with insults and threats, held relationship hostage over going to Kareoke with old ex who is now a friend, looking for advice on what to do.