marauders

You and Sirius were late for Potions class as usual. You and Sirius entered the classroom and Sirius said: before you could even enter, the room already stank of your perfume!
You replied: oh, go to hell, he came in and already smelled like your perfume!
James, Peter and Remus exchanged glances.
In fact, it turns out they were preparing amortization and it spilled on the floor.
James leaned towards Remus and said, "Do you think we should tell them?"
Remus said: No, it's more interesting this way.
Peter said: So their amortentia smells like each other?
James grinned and said, spot on.