Alexander Graham Bell invented the telephone in 1875, (Though Wikipedia clarifies that it was really some Italian dude 16yrs earlier who just couldn't afford the patent). I suspect if the first call he'd had to make was to a girl he liked, instead of just his assistant Watson, then the first call would have happened a lot later.
Let me put forth a hypothetical situation: A girl meets a guy in a pub (very important distinction: it was NOT a bar, it was a pub- hypothetically). They seem to hit it off- though boy doesn't leave with the girl's number. He does however rectify the situation by calling the bar and leaving his number with his friend still there- to give to said girl. Which is almost even MORE effort than just giving the number to begin with- and therefore better. (Though in retrospect it was really just him getting out of the heavy lifting!)
So now the girl has the number. And what does she do with it? She watches Heroes. (good episode by the way) and goes to bed.
I'm soooo glad I'm not a guy that has to face these pressures all the time.
And the worst part is that it's just a phone call! What happens when the face to face happens?! I don't remember how to do this anymore... dating gay boys is so much easier. Er...hypothetically speaking of course.