Is it ok to hate him or that I’m stuck on detachment. I know hating an ex is some way of being connected but I’m over?

I rejected the guy owing to my personal trauma. He was madly in love with me and I’m yet to find someone who is soo much in love with me till. My personal trauma stems from abuse, neglect and my friend trying to seduce my boyfriend and about to charge me with pedo (she was minor and preggo and claimed the boy was my brother, which is a lie). The closer he came the more the trauma I felt that had always been dismissed. I attribute the hate for the trauma to him.

When I went back to him years later, he got cheated by his ex and was devastated.

He never acknowledged knowing me even on sidewalk which caused my anxiety to wake.

Anyways he treated me poor. He would treat women with low moral values better than me (well I did the same to him as I was scared I would hurt him)

However he became increasingly worried of my safety and the guys I hang out. He started questioning me when my phone is busy at nights. And when I had a boyfriend he began saying things like ‘your body belongs to me’, ‘I look good on you’ and so on. He had a burst of anger when I kissed a guy. But still he claims not to knowing me.

Yesterday we were on a flight sitting next seats. He was very nervous and fidgety around me and asked a guy yo switch seats so that he can sit next to me. I saw him look at me on the window reflection but kept a straight angry face when crossing to access the aisle. We didn’t talk.

I have no ill will against him but sometime I feel the same anger I had years back when he was chasing me. I hate attachment or relationship but somehow I hate him more.

Is it ok to hate him or that I’m stuck on detachment. I know hating an ex is some way of being connected but I’m over?
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