<human>: My boyfriend is abusive.

He is abusive physically and emotionally. I'm currently covered in bruises. And this is not okay. He's a chronic cheater- I've found underwear that is obviously not mine in his backpack, been approached by two girls as a "heads up he's cheating".

We live together, have been together 18 months and living together 6. I can afford the apartment alone easily on my pay; he cannot. And I want to keep it in the breakup to come, especially as my kitty is used to the space. Part of why I need to end this is her- she doesn't deserve to have constant fighting around her.

How do I end this in a way that I keep the apartment and he gets out? In fights in the past when I've said I'd make him go, he's said he'd stay out of spite, or force me to go to court.

So what do I do?

Could you distill the essence of the text into 1-3 sentences?
<bot>: Boyfriend is abusive cheating jerk. I want him out of our shared apartment that I can afford but he cannot. How do I do this?