If it matters I'm 17 and she's 16
Most Helpful Girl
Pizza and a movie0
Movies and ice cream after and a nice walk if things go well. But if your willing to take her out. There's no 50/50. Gentlemen always pay. (Just an FYI)
If you're not that experienced in dating, I'd recommend the simple dinner-and-movie first date. It's a shared experience during which you can get ideas for what you want to do the next time.
ice skating, bowling, mini golfing. Not dinner and a movie. You can't talk much at all on something like that.
Sex. . . .