It depends on how close you too are.
Personally i'd be really flattered and take that as a clue that you wanna date me.
But like i said, that only if you guys are close.
If this girl is not really a friend, as flattering as that sounds, it could be a bit overwhelming for her.
So, i'd wait untili you guys are close to say that.
If you guys are close, GO FOR IT!
But, don't just say it straight forwardly like that. That's a mouthful.