Feeling petty

So long story as short as possible. Had a fling wasn’t serious found out I was pregnant asked donor to go with me to get an abortion (too afraid to go on my own). He said no then we stopped speaking. Months later I reach out to him & ask him just to attend the birth, no money, no relationship, just be at the birth. He says no, he forgot I was pregnant at all, & apparently got engaged.

The whole time we were messing around he swore he wasn’t seeing anyone else now he’s trying to block this kid out of his life to keep it secret. So this tells me that he was with someone the whole time & is trying not to get caught up.

He told me not to contact anymore & that I was harassing & threatening him. Mind you during my entire pregnancy I’ve only called him 3 times. Once to ask for an abortion, then to ask if he would attend the birth (which he said he’d think about), then lastly to see what his final decision was.

I’m starting to feel so angry & bitter honestly. I want to be petty & Force some karma on him that doesn’t seem to be showing up.😤😤 I want him to hurt for being such an asshole to me & a terrible piss poor excuse of a father to my child. How do I get over this? Or get revenge? I need something to feel better because I only ever seem to get angrier.