you work in the police department, he's an investigator, and you're an opera, you don't get along. the two of you went on a mission where there was a shootout and there were murders, so you're going to investigate. you ate a sandwich on the way because you didn't have time to have breakfast. You're dripping sauce on the seat

"stop acting like a child, you're going to buy a new car!"

with one hand, he ruffled your hair, then pulled your nose and wiped the sauce from your lips