Hey guys. I'm gonna touch on some things already addressed here, and some things that I think are worth mentioning.
COLD READS. Already been talked about, I'll leave it at that. Google it, if you're confused.
SHIT TESTS ARE YOUR FRIEND. Passing shit tests with flair will make for a much more interesting conversation than boring back and forth about your lives. This means you can draw shit tests out of a girl intentionally. "Look at that guy! He's dressed fresh as fuck, I'd totally bone him." -- ever think I'd tell you to say that?

it works. She HAS to shit test you after that, it's like she's tossing you a slow pitch.
BE LOUD AND DON'T CARE! This one's a lot of fun! Hugging a girl and yelling "THIS GIRL IS MY BEST FRIEND!" is a lot more interesting than back and forth interviews.
SEXUALITY. Easier said than done. It's taken me a long time to reach this aspect of my game, and mine is no where near perfect. But I do know that you can toss out consecutive "thats what she said" jokes, talk about masturbating to how soft her hair is, ask her if she masturbates, yell to random girls that you want to have sex with them (while sitting with this girl) and it's all okay! MUCH more interesting than interviews.
And finally, if the time comes to get serious, after all of this, it helps to have some seriously deep beliefs. Whatever spiritual system you choose, really understand it and care about it. If you choose not to have a spiritual system, have a really strong personal code, and be able to talk a lot about it.
^Just because you CAN talk forever about these things, it doesn't mean you should. Often it's better to shut up and kiss her.