I've never done this, and don't preach what I don't practice, but I have done this for 2+ sets, and as long as you come across genuine and sincere, you should be good..
Sinn had posted this somewhere...
something to the effect of: Excuse me, you're absolutely adorable, I just had to come over and get to know you, if that's ok with you (and look at their friend for compliance).
so you're showing balls, social intelligence, and you're being polite and charming. besides it comes across more passionate and with more meanin behind the "I HAD to come meet you" regardless if you were with someone or not... and that is what really resonates with the girls in
direct game...passion and romance ; )
I'll give this a try as well and post my experience... good luck!
Much Love,
Dubs