You had a healthy relationship with Giyuu before he became seriously toxic, he never let you go out or talk to anyone he knew, he wanted you all to himself.

They argued every day, shouting, breaking dishes, everything until he got tired and dared to slap you for the first time. "I already told you no!"

He shouted, grabbing your arm tightly in a painful way as he pulled you closer to him. "Why don't you understand, Tanjiro? Do I have to do something else for you to see it?... Why don't you understand that you are only mine?!"