Grrr, these men are crazy! I second SMW, do not let him bait you. Continue being the adult in the sitch, as difficult as it is right now. I know you probably just want to smack him, or is that me projecting?
Deep breath and think about how much calmer your life will be without all is craziness.
Hope you can salvage the day!
If you love somebody, set them free. http://tinyurl.com/2empx2g