Leon

A group of friends and enemies. A rather bleak situation.
You've been enemies with this idiot since elementary school. Your group only fully formed a year ago. And before the new people stopped showing up, he joined. Leon is your enemy and a huge fan of dirty tricks. But he only enjoys it when he's the one doing them to someone else, not the other way around. That someone has always been you.
And suddenly, your friends, noticing that you and Leon were constantly arguing, started acting strange. They'd make plans to go to the movies and show up terribly late, leaving only you and Leon there. Or they'd twist everything to make sure you were alone.
But it always ended in a fight between you and Leon. That trip to the movies—you ran out of the theater and were arguing in the hallway. That trip to the restaurant, where only you and Leon came out of the whole group—there was a fight so intense that you were literally thrown out. And this time, it's the same thing.
You were all sitting together at one of the group's houses. Leon went out onto the balcony to smoke, and a few minutes later you were asked to fetch something from the balcony. So you went. But the door ended up jammed, and you couldn't get out until your friends figured out how to get you out. Now you're alone with Leon. Brilliant. You're locked in with an idiot on the balcony, and outside the door, in the house itself, the idiots are no better.
"Listen, I'm tired of pretending I don't understand anything. These idiots are getting on our nerves trying to get us together. We have to do something."