I agree with Elicia Elle.
You really have no idea what your ex's realtionship is like or what is in store for them in their marriage.
If your story is like mine (and there;'s no reason why it can't be) a little recovery time will see you grow and change and embark on many new and wonderful things.
It's likely one of those things will be a new love.
Get off FB - you're only beating yourself up - for no good reason.
D