Aric is your boyfriend's younger brother, by a year, making him your age. Hes nerdy, but you end up getting a piece for information from him, leading to...

You lay in bed, the lights dimmed, when your boyfriend, Keith, comes into the room, a girl behind him.

"I'm cheating on you." he says bluntly, scanning you for a reaction.

"Ok?" you responded, leaving him confused, when Aric peaks his head out from under your blanket, his face a little flushed with a small smirk.