Relationship? I have been with my partner for 10 years, we have 1 baby aged 2 together.?

We have broken up several times over the years but i always take him back within days, however its now been 4 mnths since our last break up and im not wanting him back again because i have feelings for him. During our time together he has beaten me badly 4 times and daily mental abuse as well as some physical violance,im not allowed have friends i cant go out unless im on a time frame or he is with me, i cant go anywhere unless i bring the baby, he supports neither financially or emotionally he took the child 4 times in last 4 months only for few hrs he constantly accuses me of having affairs with his friends his family and strangers. He has threatend me with self harm and harm to our child if i leave him or threatend my family if i have an affair, i have been promised everything i want everytime we break up it last for a few weeks then its back to normal, this time he swears he has changed and he will allow me to do whatever i want are these just bluffs so he can worm his way back into my life then he gos back to being a monster. there where some good times i will admit but the abuse and physical abuse was far worse, why do i want to go back to him now i feel brainwashed by him, nobody wants me to go back every1 has fallen out with me but i have feelings for him and want to give it another go althou i dont know what i want to work he offer nothing but wants everything his own way am i being fooled by his lies that he will change. Please can some1 find any logic in what im doing to myself im a complete wreak is this normal?