Someone who will understand him even when he is quiet, someone who will be comfortable with his silence, someone who will be into all that philosophy shit and well, she wont call philosophy kachda or shit. Someone who would not be a cynic but full of hope and all things nice, someone who could find light in the darkest of situations, someone who will love him unconditionally without any trust issues. Someone who would be secure enough, someone who wont drink, wont smoke, wont abuse. She would be there for him always, she would be a metalhead and would headbang with him all the time. She would randomly recite Ghalib's poetry to him. She would be awesome, truly awesome.
P.S. Note to that "she" : Beware bitch! I'll find you and I'll kill you or maybe make him marry you. :p