What I feel about KK is that he wanted this bhai waali bromance with N..but N being head over heels for P.. woh ho na paya. He's stuck on N. side by side he used to talk with Umar..now he's settling with Umar.
I genuinely haven't felt genuine waali feeling from kk side for Umar. I don't hate or dislike kk..i am neutral for him..but Uska Umar ke liye pyaar mujhe nhi dikha abhi tak. They might be doing fun together..but kk hasn't taken stand for Umar even once.