What do you want to teach your kids about relationships and what are they learning here?.
What did you learn about relationships when you were growing up?.
Teach your kids as well as you that the only acceptable level of abuse in any relationship is none. You are not and have never been some sort of rehab centre for such badly raised men.
You do not need a boob jobl. You just need to keep your now ex out of your life permanently, a man who chose to shout at you and otherwise call you crazy (he is the crazy shouty one here; not you. He was merely projecting his own self onto you). He targeted you deliberately to abuse you. Such men too hate women, ALL of them.
Truly lovely men do not go around calling their gf or partner crazy or otherwise shout at them.
Men like you describe wreck boundaries and your boundaries, already weakened perhaps by poor life experience and or abuse, were now being further wrecked by this individual. Men like this too can be nice sometimes but this is really the nice part of their nice/nasty cycle of abuse which is a continuous one.
Stop spending any more time with him as of now. Your relationship with him is over and basically you went from one abusive man to another one. I would also suggest you contact Womens Aid and enrol yourself onto the Freedom Programme.
Be on your own and make yourself and your kids your number 1 priority.