I (27F) really really really don?t want to get married to my fianc? (29M).

I?m getting married this December. Everything?s been settled. Everything?s almost paid.
I used to be so so so excited for this. I?m finally getting married to the man I love the most!!! But it dawned on me. He?s never gonna change. And no, he?s not cheating.
He is overly jealous, very controlling, very assuming. He used to call me names. I?d always get hurt, cry, beg God to take away all the pain. I cannot do my job properly because I was forbidden to talk to men. If I was in the office, I?d get spammed (text, call, chat, email) if I don?t reply ASAP. We?d always get in a fight because he always think I?m flirting. He?d obsess over the littlest thing, like if one of my teammates joked. I cannot react, I cannot laugh, I cannot smile, I cannot respond - I should not, and I don?t.
It?s hard, because I used to be jolly, I used to be approachable, I used to get comfortable with people easily. That?s how my parents raised me - until he decided I should change. And I did. For him.
I?ve been fantasizing on disappearing from his life. I want to pack my things, go somewhere he?d never know, live a quiet life. I?ve been dreaming for a while now of me getting everything I own in our house while he?s away. I want him to come home knowing I left, and that I will never come back.
With the arguments and his words stuck on me, I realized that he?ll never change. Once I married him, it?s gonna be harder to have control of my own life.
I still have time to not get married. I just don?t have the courage.
TL;DR - I don?t want to get married. I?m so afraid of the things I?ll leave behind like our house that we bought together, the wedding expenses, the relationship. I know once I decided to leave, I?m never going back.


Source.