Lucy, love honestly. I can tell you from the other side its lovely.
I now have a lovely life, i can go where i want, see who i want.
When it ended, no one judged no one criticised. I got back in touch with those friends. I didn't tell them the half of it, they knew things were off. Theres a lot that still comes back to me now, things id forgotten and i look back to what was 'normal' and its shocking.
Its left its scars, if I'm not home when I've said i feel awful (he doesn't care as long as he knows we are safe), i still get a bit jittery and panicky and go into 'make it up mode'. I still am paranoid about my phone.
I look back at all the tired arguments, the affect i let it have on my job,on my friends and on the life i should have had. Its sad really sad that i let that 'existence' be my life for so long. But its like a cancer and i let him have enough of my life, I'm not letting him take more.
You know in your heart its not right, you know the life you are living now is not a life, its not the life you deserve. yes it will be bumpy to leave. But only for the short term. He will ramp it up, he will accuse you of all sorts, he will kick off, he probably will threaten suicide. But do you know what, mine didn't go through with it and i would bet you yours won't either and even so thats their decision to make. He doesn't like you talking to your friends as he knows his behaviour is shit, and he knows they will tell you and you might go. He knows your too good for him and this blackmail and co-erceive controlling is the only way to hold onto you.
Life on the other side is bloody brilliant. I could even go on nights out with work colleagues and shock horror give the men a lift home!! I lost ALOT financially, but that was a bargain for my freedom. There is now police protection his behaviour is a crime, if he ramps it up to stalking and harassment once you've split thats a crime too.
Don't make this be your life forever. Get your ducks in a row and get him gone NOW. Before your son thinks this is how a relationship should be (mine learnt his behaviour from his father and it was his mum who eventually got me to leave on the basis that she had lived her life like it, and she didn't want me to live it too).