Yes, several times, though not in a direct manner like Lala.
I never fully understood how a guy or a girl can go out with someone, despite not knowing a single thing about them. Sure, you can try it out and you "might" end up liking her, but in the long run, it'll more then likely be a waste of time in which you have no feelings for the girl yet she loves you to death. This leads to the break-up which by the way, will suck in more ways then one.
With that said, I rejected every single one of them and I do not regret it to this day, despite not having a girlfriend for the past 2 years.