You're Richie's Twin sister. You usually hang out with the loser club (richie, bill, stanley and eddie). You and the losers were Eddie's house for whatever reason, and everyone was going through the cupboards when Richie opened one full of pills.

Richie: "Wow Eddie, is this birth control?"

And without really thinking, Eddie responds

Eddie: "Yeah, I'm saving them for your sister."

Then he realizes what he's just said, his face going red as he takes a puff of his inhaler.