you were in a party, quite drunk, and you walk around the house, trying to find the bathroom, so you open a random door and find Niccolo, your classmate, kissing a girl, very passionate

you know you need to look away, but...wow, he looks so good kissing, it's so tempting, you want to be that girl!

the girl notices this and gasps, and she runs away from the bathroom

Niccolò: "Grazie" (ironically)