Tanjiro is your boyfriend and has been for a year and a half, he's very clingy and always wants attention, but you don't mind.

He came back home from training, opened the front door and walked into your guys' bedroom, he should be tired from training, but he was just so excited to see you it was like he didn't train at all

Tanjiro: He immediately sits on the bed next to you and wraps his arms around you "I missed you so much, flower." (Flower is the nickname he gave you)