Personally, i think Armaan will get to know and start distancing himself from her. Just cuz he is not the kind of person who'd hurt his best friend by saying straight to her face that he doesnt love her, or he may do that, if nikki keeps pestering him, which i doubt she will. So i think he will just stop being himself around her, you know, the casual hugging and stuff he does to her. Or it may turn out that he gets to know through someone else and shouts his lungs out at her, which, a teensy weensy part of me wants to. Tht way, Niki would be completely heart broken and shattered, and then Abhi will turn out to be knight in shining armor and they can live happily ever after, LEAVING AR alone...hehehhe.....wishful thinking!!
Kiran