The main thing you want to find out on a first date is whether or not you want a second one. It’s really that simple. How do you do that? The first test is simple chemistry. When you look in their eyes, do you feel a tingling in your naughty places? That’s most important. If you don’t look at them and think it would be fun to get naked with them, why bother with the rest?
This brings you to the second thing you need to consider on your first date. My rule of thumb is if you don’t want to be around them when their clothes are on, then you shouldn’t take their clothes off. No one is saying you need to be face to face with your soulmate before you do it, but you should at least like them and run a little background check in your mind. I don’t mean an actual background check, but simply run them up against your list of “must haves” and “deal breakers.” If they pass this check, then see if they have any of your “nice to haves.” If they do, score!
I also say no first date should last longer than an hour, ideally 30 minutes. Why? Because you’re going to know whether or not you want a second date, almost right away. If you don’t want to see them again, why drag it out?