Women have a continuum of their likelihood to have sex the first night they meet a man. It is a combination of their hormone state, how many male options they have, how many of their friends know they have a date that night, their stress level, what they have to do in the morning, and their feeling of self worth and general need for ****.
A lot of that I can't do much about but I can get a feeling for when I talk to her. I have to admit I have a pretty low success rate on first DATE lays, but much better SNL rate when meeting women out and about.
Probably because on a scheduled DATE. There is waaaay to much time to think about it. It is easier just to roll with the good feelings on a night out and head back to someone's place.
In College met a girl i'd had my eye on for a while out at the bar and walked her home to her place....she invited me in and was giving me a backrub. I had relationship on my mind and being a gentleman, I left her unmolested and went home with a raging boner. Invited her to the Fraternity event the next weekend which included an overnight stay and nothing happened. So I learned to strike when the Iron was hot....