Naruto was his rival.

But is it wrong to feel comfortable with him?

Sasuke didn't know why but the Idiot was comfortable to stay with

But Feelings aside Sasuke is suffering from being Alone and depression

Sasuke pushed anyone away but his rival and teammate is as stubborn as a rock that keeps coming back and won't leave him alone

"Just Leave Me Alone Usurantonkachi I'm tired."

"Stay with me Forever"