not sure what to do about this..would love feedback

I’ve been talking to and seeing someone for a month now and logistically it’s going rather well. We have good conversations and I feel like there’s a decent connection. He’s so sincerely nice to me and I can tell he genuinely likes me. I like him too but internally I’m still very hung up on my narc ex.

Narc ex and I will never be together again. He now hates me anyway and he treated me like shit for most of the time we were together. Insults, name-calling, belittling, etc. The break up that happened over a year ago (haven’t dated anyone since) was a disaster and ended in me being blocked on everything of course. I still see him around town but other than that we’re completely no contact and I know there’s no chance of reconciling. I’ve accepted that, but a huge part of me still really misses him a lot. I’m extremely trauma bonded if you can’t tell.

I feel like I can’t fully devote myself to this new guy and it makes me feel terrible. I feel like I’m stringing him along and I know how shitty that is because I’ve been there before. I don’t want to do this to him. But at the same time it’s already been a month so I feel "obligated" to keep dating him. That’s not a great word to use but I can’t think of anything else. I just really don’t want to hurt him.

What do I even do in this situation? Do I end it with him because I’m not healed or I’m not ready to be with someone new yet? What are your thoughts