how old are you @stomachcramps
It sounds to me like you have massively settled for a complete loser and tolerated behaviour that you should have walked away from long ago.
I say this with no judgement - I did the same. I stayed even after my exH hit me, emotionally abused me, constant temper tantrums and rage (smashing things etc) including in front of our young children.
There were signs of this behaviour before we got married (we were together 7 years before we married) and I chose to minimise them/convince myself I could manage them. We were married nearly 14 years. This was a sign of my immaturity and insecurity but also of my shit boundaries as a result of my upbringing.
Even when I left exH I didn’t realise just how bad his behaviour was, I had a delusional idea that we would consciously uncouple and happily co-parent. I was a boiled frog. With space and distance and talking to a therapist and my friends about the reality of my relationship and of theirs, and now being in a healthy relationship with an emotionally mature man, I have come to realise just how cooked my marriage was.
Your H will be entitled to a significant part of your asset pool and is likely to be quite greedy/unpleasant once the reality kicks in and he realises he’s losing his meal ticket. You do need to move carefully here and look to get your equity locked down asap. You catch more flies with honey - let him go, play on the guilt he hopefully feels re DS, don’t make things hard for him re his new relationship, get the house and the nice car and go on to live your best life. And get therapy. It’s changed my life. I am nearly 43, I left my ex nearly 2 years ago, since then I’ve lost weight, had a great promotion, travelled extensively, bought ex our of the family home, reconnected with the love of my life (didn’t realise he was at the time but there you go), kids are doing well. Life can be amazing.