The first date, if you're lucky, creates a gentle stirring. That anticipatory feeling that something you've been waiting for is about to happen.
By the second date you feel that things could be moving in the right direction. You will it to be so but it'll only happen if everything is aligned. Take it slow. These things should not be rushed.
On the third date, after so much hoping, you have the overwhelming urge to commit. Everything about this feels right. And you haven't even had your lunch yet.