Is it that he bugs you so much, or is it the
memory of him and what he did or said (or didn't do or say) that bugs you so much?
If it's the latter, what I did, and what I think the best thing you can do for yourself is to put him and the memory of your life with him in its own place - as part of the story of your past life. Easier said than done, but with practice, putting your past behind you is about recognizing the past for what it is - it's history. It's not actually real right now. It
was real, but it's not real now. If what bothers you are the things he did in the past, they can't continue to bother you without your permission, because what it is today is just a tale of what happened. You've dealt with whatever happened. He's no longer part of your life. You have the extraordinary power and gift to choose how the story of what happened will affect you both now and in the future.
I hope that helps. It sure helped me when I went through that
.