That look, maybe because Jade's tipsy already, makes her genuinely angry for a second. That's not Riley's fault; it's just the idea that someone thinks she can't do something. That she's seen beyond her ruse for a second.

So really there's only one thing to do, even though it's playing right into the older girl's hands. Jade grabs her by the wrist, and pulls her close, kissing her like you're supposed to in a closet and ignoring the fact this is probably exactly what Riley wants. She can vanish lipstick stains later.