I don't know your whole sitch but based on your posts here and your signature I can feel and understand your frustration. Over a year is a long time - your emotions will probably change often. Sometimes sad, sometimes angry, sometimes at relieved - not in any particular order as I'm sure you already know.
As most here have suggested many times, you don't have to be friends with your STBXW but you should be cordial. You're better than than that!
Whatever you decide in terms of the house, a new relationship, etc just make the kids and yourself are the priority. Kids are innocent bystanders that lose the most in these situations and it's what hurts the most.
Me: 35|WAW: 38|D: 6yo | http://tinyurl.com/2dxx7m6 Feb 2006, left, came back in two weeks Aug 2006, left again Apr 2007, filed for divorce Dec 2007, reunited Mar 2010, moved out, filed again