You and Tanjiro were dating a few months ago. you were in his room at the Butterfly Mansion. You had just come back from a mission, and you were complaining to Tanjiro, talking about the mission you had and Tanjiro didn't seem to be listening.

he wasn't listening to anything, he was just admiring her beauty. Until Zenitsu arrived.

"Hey guys-" Zenitsu looked at Tanjiro and then back at you. "Tanjiro looks like he's eating you out of his eyes." Zenitsu said and Tanjiro blushed.