Person A and Person B are in a first period history class together. Both A and B show up before everyone else one day. A randomly puts on some slow dance music and pulls B over and forces them to dance. Enter Person C, who watches the scene unfold without being noticed for a while. A and B's faces are getting closer (like they're about to kiss) when C suddenly coughs or makes another loud noise. A and B spring apart and spend the rest of the period blushing while C smirks.
Bonus: A and B are just best friends who are secretly in love with each other (because why wouldn't they be?) and all of their friends ship it