Thought we were happy...Until!! I need advice!

[intime]

Tonight was another hard night, H brought HW to our sons last game of the season and didn't even come talk to his son after game was over! I thought we had a little breakthrough yesterday at mediation, and he agreed to do some work on my car. Which I really appreciated and told him so! I just can't seem to stop getting little digs in about the HW, I know I need to stop but it's so hard for me to see what he sees in her?