Married Guy (Figleaf): I don’t think first-date sex together ruins your chances but it does change them. You know the critical little “voice in your ear” that says “Hold off: good girls shouldn’t ruin their ‘reputations,'” even when you’d rather not wait? Men get that too. Only ours says “Go for it now: losers never get another chance.” Neither “voice” is telling the truth but they can have an effect anyway. Sometimes when we have sex right away the social pressure those “voices” represent get in the way of everything else we might feel about each other. So for both men and women I think it’s worth it to wait at least for the rest of your feelings catch up. And since when did horny have a shelf-life anyway? Even waiting a few days (three days, not three dates) gives you both time to talk, a chance to take showers and sleep on it in your own beds, a time to decide what you really want instead of what you think you should do, and… time to get your respective bedrooms tidy and kitchens stocked for intimate guests.
Engaged Guy (Mark): I don’t think there are too many absolutes in this crazy game of love, so a first-date romp doesn’t necessarily preclude any future relationship potential. What is a universal absolute regarding potential relationships is that communication is key (trite as it sounds, it’s so true). Let’s say you and your date are lucky enough to totally “connect” in all the ways mentioned above, and are also comfortable enough to acknowledge to each other how much you are on the same page, even about getting physical right away (and of course, as Em & Lo have taught us, keeping in mind, and also communicating about, all the relevant important safety issues involved!). Well, in a way, you already have some fantastic “They were inseparable (figuratively in this case, heh) from the moment they met!” romantic potential built right in! So why, then, does the fun have to stop at the bedroom doorway? Now, as we know, it’s not always such an ideal world, with perfect communication right off the bat, so exercising a modicum of restraint (and building up anticipation for the fun after a subsequent date soon to follow) isn’t the worst thing in the world, either. So go with the flow.