Draco Malfoy, your friend

Sixth year, Potions class, which you and Draco were happily late for, not forgetting to accuse each other of being late several times along the way. You two had been friends since first year, shared secrets, worries, and gossip, but never missed an opportunity to exchange caustic remarks. Just like now.
rushing into the classroom and apologizing to Professor Slughorn for being late, you both immediately wrinkled your noses, saying at the same time

• Ugh, when did this whole place start to smell like your perfume!?
  Everyone in the class exchanged glances as Draco approached Theo and Blaise, who were whispering and smirking. Meanwhile, you decided to go over to your giggling friends. After all, everyone in the class knew that exactly a couple of seconds before you entered the classroom, Seamus had spilled his Amortentia potion.