Whoa, of course it matters what kind of person they are! You can't just...talk to them the same way you'd talk to anybody.

Pick-up lines are things like... [And there's a bit of a sigh at this. Oh. Oh Sherlock. He doesn't know who you are but he's rooting for you.] "If beauty were time, you'd be eternity." Or... [And yes, every single time he says a pick-up line he perks up before going back to normality.] "Is there a chocobo nearby or is that just my heart running off?" Or... [Thinking.] "Have you always been this cute, or did you have to work at it?"

But maybe you oughta skip those...