shutup
Re your comment:-
"I know abuse takes many forms from emotional, to physical to sexual, controlling behaviours he doesn't display those,he doesn't stop me from seeing friends, family,or doing anything I want to do,he doesn't lash out physically or verbally he doesn't call me names or swear or shout at me.its very difficult for me to hear so many of u describe this as abuse because it honestly doesn't feel like that. I'm not a stranger to it I was in an emotionally abusive relationship as a teen with a guy who controlled me by manipulation and sweet talk he used to threaten suicide when I would try to leave etc my sister also was in an abusive relationship for a lot of years and I helped her get out of it. I do agree though that it isn't doing any of us any good himself included and I'm going to tell him that he needs to get help or I'm going to leave because we can't keep on like this".
This just gets worse and worse. Both your sister and you have been in previously abusive relationships too and in your case this man further targeted you to abuse as he is doing now. Going from one type of abusive relationship to another one is not that uncommon a scenario sadly. Your boundaries, already skewed here, are being further got at and otherwise eroded by this individual now. No wonder you do not know which way is up.
He does not have to stop you from seeing friends to abuse you because what he is doing currently works very well for him.
He uses his ongoing "depressed" state as well as the silent treatment (he uses this as a means of control) to further control you and your kids with. He barely talks to you and when he does he grunts. I would think he also controls you by giving you a "look" when you say you're going out somewhere.
Goodness only knows what emotional damage he is further inflicting on you and in turn your children here. He has refused to get any help to date preferring instead to inflict this on you all. Why do you think he does not want any help?.
I sincerely hope you find it within yourself to leave because as you rightly state we cannot go on like this. Indeed you cannot.