Being the ENTP that I am, when I broke up with him (the final time), I did it on a grand scale - ended it, moved to another state and met someone else within a week. He, on the other hand, tried to save the relationship in his own grand scale kind of way: he went to my jeweler and had a custom ring made for me, flew all the way to my new state, looked up my address in the phone book. When I opened the door, he was on one knee. I gave him a LOT of credit for that, as I closed the door in his face and promptly forgot about him until just now.
Aww, that story makes me sad

( He probably still thinks of you as 'the one that got away.' I think ESTPs' tertiary Fe can get the best of them sometimes. I admire that you're able to make a big life change and not look back, though. I tend to second-guess myself too much. ENTP + ESTP sounds like an interesting and lively combination.
Anyway, my thoughts on the differences between ENTP versus ESTP:
ENTP --> loves to one-up. excellent conversationalists, and really enjoy people who can keep up with their constant flow of ideas. side-splittingly hilarious. can be extremely incisive with sarcasm, but then seem to feel bad about it when they realize they've hurt a friend with their barbs. i think they're one of the sexiest types for sure, but i'd be hesitant to risk a relationship with one! also: they don't seem to help out much around the house!
ESTP --> likes to have the the last word. laidback. pack-leader mentality -- they can be a little controlling (not knock-you-over-the-head controlling like an ESTJ, but controlling in a sly sneaky way). master manipulators. if their Fe is well-developed they can be surprisingly sweet! class clowns. excellent with hands-on activities around the house, and often excellent cooks. their uber-confidence is usually incredibly appealing but occasionally incredibly frustrating! definitely more conventional than an ENTP, though not nearly as tied to convention as an SJ would be. (when a convention works for them, they cite it and uphold it; when it doesn't, they ignore it.)
ESTPs are my favorite type, though ENTPs are way up there too! [full disclosure -- I'm about to get married to my ESTP

] Even on the crappy reality tv shows that I watch, I always find myself rooting for the ESTPs and admiring their adept leadership and social skills.