I think you know what needs doing. Good luck and I hope it works out for you.
And your kitten too.
Get out, you are in a burning building... You will not find happiness there. The highs will be very high but the lows will crush your soul, suck your life. Sorry if I'm overly dramatic, but it sounds very very bad to me. You don't owe him or his mother anything. You are not a ***** for sale, they can't buy you, you're not for sale.
Good luck, it will be a painful break but worse later. If you have access to a counsellor, maybe an EAP at your job or your parents job, get some free counseling. It can be very helpful.
EAP = Employee Assistance Program
Absolutely. For your own safety, get out and run away. This guy is a ticking time bomb.
My mother once said: people change.
He was always like that ,you were just too dumb to see it.
I don't understand it either, I'm going through the same thing. He just started lying a lot and getting angry and pushing me around. It sucks. I don't know what to do.