I have no magic strength, backbone or anything. All I have is my memory, remembering how abjectly miserable that guy worked so hard to keep me.
How infinite was his attention to detail when it came to trying to remove even the slightest glimmer of joy from my life.
How he humiliated me in front of literally everyone I met for over 3 years
How he screamed at me for no reason, in front of my mother, in front of my child and in front of strangers, but it was all my fault as I had simply asked him NOT to have a go at some tour guide, for the sake of everyone's day out.
Most of all I have fear, fear of what he made me become; withered, shrunken and sad. A worse mother, and a poor individual.
THAT is the reason why I'll never, ever, EVER go back to him. Being alone for all eternity is a billion times better than one second back with him. If I live til 90 I am happy to spend the next 40 odd years totally and utterly alone than be with that man again. It'd be better on every level. However, 40 years is a long time, I'll bet that if I want to, I'll be able to find a good man to be my companion in life... But that's MY choice. I'll never allow another soul to call the shots on my life again.
IF you go back, you will need to be ON YOUR GUARD every single day for the rest of your life, you will have to be fighting his disrespect of you every single day, wondering how he will upset you today, tomorrow or another day when you really need his support, he'll drop you in it like a hot rock. Allt he while, both of you know that he's hit you before so will do so again if YOU provoke him. But it's HIS fault he loses his temper, isn't it?
If you stay away, perhaps this new guy will be good for you, at least with him there is a HOPE he will be a good guy. With your Ex - YOU KNOW HE ISN'T!
You have come out of a DV relationship, I wouldn't have recommended you date so soon, until you have recovered from the violence/abuse, but you are and it may be good for you.
In any event, please read Why Does He Do That by Lundy Bancroft, it will help you understand what went on, and how you could have done nothing to prevent it, and how you didn't cause it. Please, it could literally SAVE YOUR LIFE.