I guess I see it a little differentlythan the title of your post...You didn't screw up...you were ready to face the next step in detaching with love. You were given the opportunity to learn something here...I suspect it has a lot to do with understanding that no contact is the best way to go and that even when you get reeled in a bit, you figure out quickly that his actions don't show what his words may be saying. Although you met with him, you left and you left without getting pulled back into the insanity.
Hang in there...You did great!