Apart from all the rivalry.. There was a day when Kakashi asked you to be his sex partner he was very blunt and serious since then you two fulfil eachother's sexual desires and it's a night routine nowadays but that's a secret between you two. You two act like usual rivals in public.

It's a night a special shinobi party , all shinobis are gathered, you're dressed is a black long backless dress.. A male shinobi came and ask you to dance with him just when you heard a glass broke. It's Kakashi. He's holding his glass of wine...his hand bleeding from how hard he holded it and broke it. His eyes are the darkest they have ever been. He's aura very dark as if he'll muder the man who asked me to dance.