Owathu,
I wonder if your perspective has changed? Maybe your brain is getting its wiring corrected and your looking at things with you being the center of your world and not your A. Of course sometimes you feel angry - he did plenty to make you angry. Ambivalence, that makes sense to me too. You are moving on and don't want him anymore.
Not too long ago I recognized that this shift was occuring in me. It felt unfamiliar and I don't always trust it.
But I say roll with it. It's okay to feel good, grateful and have some humor in your life. You deserve it for sure.
Hugs,
MamaKit