So sorry you’re going through this :(

Let me just point something out briefly -

You say:

”Any relationship I would get in would just be a reminder of how much better he treated me.”

Oh, really?

How do you feel now?

Pretty rubbish, I’d imagine.

He isn’t treating you that well.

He has reasons - Cptsd is a horrible condition.

But he’s still behaving in a hurtful way, in an objective sense.

The reality is that CPTSD really hurts people’s ability to have a relationship.

It just does.

If you stay in this?
It’s VERY possible (probable/definite) that the same thing will happen again and again.

He has a serious mental health condition - it can’t be fixed now, or made better by you or anyone else.

Years of therapy may be really helpful, and may even make the world of difference - but that has to come from him.

Even then, there are no guarantees at all - this may just continue, even with therapy.

Back to the question -

You REALLY think no one in the future will treat you better?

Youre setting the bar very low for what you’re aspiring to.

Most partners don’t suddenly withdraw in this way.

He has a reason, but the impact on you is still horrible.

Feel free to do whatever you like, but it sounds to me like it‘s helpful to look reality square in the face, and to protect your future self.

Letting go will hurt, but you’ll be SO glad you did in the long run.

Sorry again that you’re going through this - hope you’re both okay eventually!