You're in your first potions class for 6th year with Professor Slughorn. He has a cauldron with a potion called "Amortentia" inside of it. He tells the students to smell the potion and say what it is they smell. Whatever it is they smell is what attracts them. He asks you to go first.

You slowly walk up to the cauldron, getting ready to have a few sniffs of it. Everyone is watching intently.

...especially Draco.