While it does sound like he has changed, it also sounds like its a hard thing for him to talk about.

Can you blame him for not wanting to talk about it?

I think you are making a good decision for yourself, and it sounds to me that the feeling of desire and attraction you had for him has faded.

Faded or abruptly came to a halt because she found out?

It sounds to me like he is disappointed in himself, so hopefully he can reconcile with that before he gets into his next relationship.

For the same thing to happen again, right? No matter how disappointed, regretful, ashamed he is, he can’t change the past. It’s really up to his partner, not him. And judging by most of the comments here, people don’t change so he’ll inevitably reoffend. Once an abuser, always an abuser. He might as well throw in the towel and accept he’ll be alone forever, because anyone in their right mind would never be with such a monster.