Well, if it's just a little teasing, you may have had a little attraction from the beginning? I find that teasing is a really strong indicator of interest, if coming from a girl. So if that's the case too, it's good. If she took it a bit badly, well, might be a little harder to get the attraction going, since she sees you as a moron. Still far from impossible though
On finding things to say, I would give you the advice to look around the forum here and read about PU, to get the feel for the general attitude you would like to convey. Sure, you could learn a few cool lines to say to her.. and that would work.. if the conversation doesn't last longer than a few sentences

. So in the case of having scripted lines to use, you'll probably spoil 'em anyway, since you don't know what to say for the rest of the conversation or how to say it. Therefore, I have to say, work INNER GAME.
Oh, and yes, DLV is Demonstration of Lower Value. Meaning less social value
