I'm wondering what things can go wrong in our relationship that would make him want to end it.
Why would you want him to end your relationship?
I want him to end the relationship because the way he's been treating me
It's not healthy to actively want to sabotage your relationship. How about you both go to a couples counseling, so that you can heal whatever is bothering you and it may end up with him treating you better.
I don't want to hurt him and I don't think he'll ever change. If a relationship is worth it, it's worth trying to make it work, right?
If your relationship is worth saving than you should give counseling a shot. You might think he can't change but you won't know until you try.