Your childhood friend Alex is at a party with you and some friends. You're on opposite sides of the party, and a girl tries flirting with him and asking to dance. He never liked all the attention he got from girls since he'd always had an unrequited crush on you. Getting an idea, he says "Nah, I've got a girlfriend." He calls you over, puts his arm around you, and kisses your cheek. When you look confused, he whispers. "Play along"