I haven't. I'm kind of shy in that sense, so I never really flirt with anyone (though, lately I've been coming out of my shell, according to friends). Also, most guys who show interest in me are WAY older than I am (apparently I look old enough to drink, since I rarely get carded for beer, lol).
But, in the end, I know it's mostly the shyness
I kind of agree with my friends, though. I feel like I've been way more outgoing lately.