First of all, you are already feeling pretty down. Snooping, calling OW or him will not make you feel any better. Let's take it hour by hour and try not to do those things. Space will help you. That totally frustrates me that he wants you back, gives hints that he wants to ML, then turns you down. I would say that would devastate me as well.
Don't give up all hope yet. He didn't leave. He still loves you and you love him. That's a good base to work through the rest of the mess. Eventually. Just take this time for yourself. No contact with him until he tries to reach you.
