Your OTP's music/dance teacher holds a contest for the best couple's dance. The prize? Extra credit.

Person A desperately needs that credit, but the only person left to choose from is Person B, the most shy/grumpiest/antisocial/etc/etc person in the class.

B doesn't want to work with A, but A signs them up as a couple anyway.


—————–
BONUS

+Everytime A touches B, B blushes brighter than the sun.

+While practicing, they accidentally kiss. Awkwardness ensues.

+ They also end up hugging awkwardly and someone accidently gropes someone. (The awkwardness can be cut with a knife at this point)

+After the kiss, A suggests 'clearing the air' by kissing again. They're actually joking, but B kisses them anyway.

+The AWKWARDNESS RETURNS WITH A VENGEANCE 
——————

After they win (or lose, your choice) B kisses A again, much to A's surprise.

The next day at school, everyone isn't surprised to see them constantly together and holding hands.