He says he'll call... and then doesn't...

Why the hell do men say “I’ll call you” and then don’t?

Ladies, we’ve all been in this position. You meet a guy, spend an evening flirting, laughing, and maybe even groping each other a little. He walks you to the subway or your car, you might even make out a little on the way or once there. Hell, he might even invite you back to his place for a little after hours fun. Regardless of where the evening ends, you think you’ve had a good time, and he indicates he’d like to see you again by asking you for your number. You give it to him, and then he says it, “I’ll call you.” And you take him at his word...

Come read the rest of the exchange between Dagny and Francisco -- it's getting heated!
What the Hell Are You Talking About?