You were rushing to the Quidditch pitch. It was just after the game. You were meeting up with Marlene and Lily to go to Honeydukes, since you got approval from Professor McGonagall of course.

You trip over something and fall into a tent. You see James and Regulus kissing in the bleachers.

Your jaw drops and your eyes widen.

Regulus sees you and pull away from James quickly

Regulus: "Er.... uh..."

They were both blushing madly