Harry to Snape:

Harry: You know you love me.

Snape: Nope.

Harry: You know you care.

Snape: About you? In your wildest dreams.

Harry: Just shout whenever and I'll be there.

Snape: I'll make sure never to shout again.

Harry: You are my world.

Snape: better than you being plastered all over the papers.

Harry: You are my art.

Snape: My greasy hair has been used to make oil paints.

Harry: And we will never ever fall apart.

Snape: Your potions grade has fallen a long time ago.

Harry: BABY BABY BABY

Snape: Potter! Detention!