Wow - sounds promising but I agree that you should take it VERY VERY slowly. If it's going to work out, he will be patient and understanding while you process this. Falling in love with the same person over and over again to me seems like a sign that you would be meant to be together BUT, I'm a hopeless romantic and it's never gotten me anywhere. I don't want to be cynical either and I love happy endings (who doesn't?).
Keep us updated on your situation. That flip-flop in your stomach is a high we all chase. Addiction to a feeling, idea or ideal maybe.