With one exception, I've never had a good relationship as a result of a fuck on the first date. That one exception was a girl who I consider "the one that got away" the closest thing I've found to a soulmate, and we already knew each other quite well before we ever started dating, she was a friend's ex-girlfriend. We were just going to have some meaningless, casual sex, and really hit it off. Damn I miss her. She was one of those girls you can't say no to. I don't dance, but if she wanted to dance, we danced. I'd jump through hoops to be with her, she was so sweet, and so pretty. But I was in a position where it was nearly impossible for me to remain faithful to her (touring with a rock band) so I encouraged her when she wanted to go to grad school out of state. That was in 1991. I ran into her in the supermarket a few months ago, I didn't even know she was in town, along with her husband and kids. Gawd taht broke my fucking heart!
Oh, heck, sorry about that! Back to the point. Except for Holly, I don't think anyone I've had sex on the first date with was worth more than another date or two.