Thoughts?

In the past he was abusive to me, please no judgement (even though I know you guys will give it) but I forgave him. We’ve been together for 6 years and he hasn’t hit me in almost 2 years, he promised me he’d changed and that was the first time he ever told me that. Not saying him hitting me was justified but I know in the past prior to going to therapy I would talk reckless and have no self control. I met him when I had nobody else and I feel like he’s my person however tonight we had a disagreement that just didn’t go well. I was being very selfish during it and wasn’t trying to see where he was coming from now here’s my concern .. he’s saying he’s been trying hard to suppress his anger but I’m on the fence about our relationship. I told him if he hits me again or if he even gets remotely aggressive then I’m leaving and this time for good.