so you had a crush on Draco and you decided to tell the fellow slytherin boys that you like him and so you go up to them and say "I'm in love with a Malfoy"

Mattheo: "a Malfoy?"

You speak "a Malfoy"

Blaise: "a Malfoy?"

You speak "a Malfoy"

Crabbe: "a Malfoy?"

You speak "a Malfoy"

Goyle: "a Malfoy?"

You speak again "a Malfoy"

Draco: "a Malfoy?" And you blush and tell him he wasn't supposed to hear that

Draco: "well I'm in love with a (your last name)"

Hearing that you blush