It's great to read that you two are able to get along for the best of the child; it's too bad that not all parents can act like adults.
I have stopped trying to get my ex to behave like a father. He has not helped financially with his 4 kids since March 2010, and he finally decided he wanted to see his kids after 6.5 months & took them for visitation on Thurs (to be returned today).
He has not had them for an overnight visit since May 2007 even
Best of luck in the new year!