Jen,
Do things that you want to do for yourself. Doing them to get a reaction from him will not work. Why? Because he knows you only too well. When in mlc, they have this sixth sense that tells them when we are truly doing things for ourselves and any changes we make should be real and keepers.

I know that you are frustrated w/him, but he's useless right now. He can't assist you in anything that you need assistance with. Co-parenting? Out the window because he's a teenager himself (in his mind). Being a husband? Out the window because he's a teenager once again and has the maturity of a 15 year old.

Right now, you are the adult and will have to be the parent to your children. As for the adult/child....leave him be....he can't help himself, therefore he can't help you. It's very frustrating, but you will need to treat him like a roommate right now. His interests are elswhere, just like his real "adult" age...gone for a while.

BTW, you can't share lives, experiences, etc. right now because you are an adult and he's back in time to the age of 15. There is a "generation gap", so to speak. He's on an entirely different time warp then you are. He's into the "me" generation and you are trying to be an adult here. When they are singing the "me" song, there's nothing you can do but live your life and try to take care of things on your own. You cannot rely on him for anything.

Please take care of yourself.