Hey @golfgirl827, it's good to hear from you - although I'm sorry you're having a hard time tonight. It's helpful to remember that as you heal, you'll cycle through the emotions you felt at the time of the break-up several times. The good news is that each time you cycle through them, you'll feel them less intensely, and for a shorter period of time.
As far as feeling as though you should have done something else, you could have done more, etc., honey, you were not the only person in that relationship - you were just the only one who was really making an effort. I know that's heartbreaking (trust me, I know). I believe you could have spent your life turning yourself inside out for your ex, but until he realized that he was the root of his own dissatisfaction, there was no other possible outcome for your relationship. It's the old, "you can lead a horse to water," conundrum. I think you do everything you could have done to hang in there with him, hon. I'm sorry you're having such a bad time right now - it will get better, just try to hang in there. *hugs*
_________________
What you feel is what you are and what you are is beautiful...