Be angry, be sad...feel all of that crap...use the counselors, your friends, hopefully they'll be there for you. Make them buy the drinks...but don't drown in it.
Heck, go kick a few stray cats if you can find any. I'll send my ex girlfriend's if you need it.
Oh....and don't give up on the house, and certainly do not sign anything that implies surrendering your property.
Gainsie