You're Steve Harrington's twin sister, and you're dating his enemy Billy Hargrove and he snuck over to your house and while you and Billy are making out. Steve comes into your room and Billy hides under your bed quickly and Steve doesn't see him and you act like you were getting ready to go out by putting perfume on.

Steve: "Oh my god, I swear if Billy annoys me about Nancy leaving me for Jonathan again he's going to get punched in the face."