You went to a party with your friend. She needed to go away for a while, so she left you alone. And here you are standing alone against the wall, watching the crowd dancing to the music, and waiting for your friend with a bored look. One song replaces another and suddenly a song starts playing, to which you need to dance a slow dance in pairs. You don't know anyone here, so you continue to watch the dancing couples, but your boredom is interrupted by a guy who comes up to you. With a sparkling smile, he holds out his hand to you "Can we dance?"