I find when I see my X (which is a lot, he comes to my DD's ball games), that I go through such different emotions. Sometimes it does not even phase me, sometimes I get mad, other times I feel some pangs of not really missing him, but remembering all the things we did do together. I then have to remember most of those times were really stressful and not to romance what once was. It's getting MUCH better, and I react less each time, which is good for me.
Hugs to you.