I've heard if it's too soon, the guy might not respect/like you as much...
Most Helpful Guy
I've never been on a formal "date" that ended in sex. But hey, that's just me.
There is something to that last statement, speaking as a guy. I'd say the primary motivator that pushes me towards a particular female are my raging sex hormones. Women have adapted over time and that's why "looks" are so "important" when material abundance blunts our basic desires.
If my raging sex hormones are "satisfied" before getting to know her as a person, then MOST (like 85-90% randomnumbers) of what made her appealing to me is literally gone with my ejaculation. Gone.
It's important to hold off until you feel that there's a legitimate connection between you two, if you want to keep him around. That doesn't mean be a prude. It means you have to make sure he isn't only after you because his sex hormones tell him to be.