Do you ever look at someone and feel like your heart is going to burst?

Misato Katsuragi tells Shinji something about feelings that give him a lot to think about. He asks Kaworu to help him understand what exactly she meant with that expression, and things turn out being a bit more literal than he'd previously thought.
or
The one in which Kaworu thinks he's totally receiving a love declaration from the dork he's in love with.
Oneshot! based off the animeverse