(Note: Read August 1st's post to get up to speed on this one.)
This all sounds good, and I do have a lot to think about, but it is hard when he has started back on the kick that he cannot live without me. I feel like a yo-yo.
You're not a yo-yo, so don't allow yourself to be treated like one. It's time to make a decision. Are you in or are you out? If you're out, then stop taking this guy's calls and emails. Make a clean break.
As for his saying he can't live without you, how very romantic! But he's still breathing, isn't he?
You're in pain, so take care of yourself. Only you can end the torture.