A 7th year party is being hosted in Hogwarts , in a room unsuspected by professors or prefects.

You are Sirius , being the couple you are, we’re kissing in the corner— leading to you pressing a few on his neck before he returned back off to his friends.

Fixing your hair in a mirror you came across, a figure appears behind you— easily recognisable as Sirius.

Turning around, and before even getting a chance to greet him, he points to a couple of smudged lipstick marks on his pale neck.

—“what are these?.”

his finger points to the lipstick marks dotted all over his neck - both of you hadn’t noticed them until now.