you were chatting with Zenitsu, Inosuke and Tanjiro until suddenly the other two (Zenitsu and Inosuke) dared you and Tanjiro to do 7 minutes in heaven and then pushed you and Tanjiro into a closet locking it from the outside

Tanjiro: “…What now?”

the locker was tight so you were basically pressed against Tanjiro’s body and his body was very warm.