When someone tries to isolate you and control you the way you have described, there is a problem. And if this person doesn't get help, they only get worse with time. Remember, hurt people, hurt other people.

While you "can" file for a divorce, that will not get him totally out of your life, he has the right to the children just as much as you do.

Honestly, if you can find a way to get him into some kind of therapy situation, a therapist/psychologist may be able to spot if he is somehow disordered. You have to be careful because you don't want him to lose it and take it out on you through the children. I think that you should really consider all the possible consequences before even thinking about mentioning the word "divorce" to him too.

Other than being so possessive, has he ever hit or threatened you?

OE