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Hey Reddit, I’m looking for some advice about a situation involving me (22F) and my ex (23M). English isn’t my first language, sorry if anything sounds off :')

I broke up with him in january because there were a lot of trust issues in the relationship. He made repeated accusations about me wanting & interacting with other men online (which weren’t true, the only man I talk to/want was and still is him, the other people I talk to are female friends). I told him that I still cared about him & that we could stay in touch, but that I wanted him to focus and work on himself.

I felt sorry for him. I’ve been cheated on twice in the past and it left me feeling anxious, insecure and paranoid for a very long time..so I know how it feels. I tried everything; I reassured him, supported him through his insecurities, even gave him access to my social media accounts..but he still regularly accused me of things without any proof. I kept asking him why he thought I was talking to other men but he never gave me a clear answer or showed me anything. It really hurt and I ended up feeling guilty for things I didn’t even do..it felt like he was guilt tripping me. He apologized, said it wouldn't happen again but he always ended up doing it again.

He just asked for a second chance but I just can’t bring myself to do it, not after already giving him several chances when he accused me of wanting other men. I trusted him but he clearly didn’t trust me. He said he’s been working on his jealousy and insecurities since then and I’m genuinely proud of him. I still love this man, I wish I could give him another chance, but it just doesn’t feel right, something still feels off. Now he's frustrated, saying he doesn’t understand why I can't give him a second chance if he’s reflected and made progress.

AITAH for not being able to give him a 'second' chance? Should I give him another chance?