After realizing the true him, I doubt he will marry Namrata...
After he goes to US he might find sumone pretty n fashionable that suits his imaginary standard n she might be wid him thinking hes rich n he'll feel hes found true love in her n a family in his frends...but once his truth opens up evryone including the girl will ditch him n at that time he will realize wat his family n Namrata meant to him but by that time it will b too late...
I remember Latika Didi once said, Shubh will do sumthing that will make evryone proud...I feel Shubh will step into Karthiks place in Namratas life when Karthik will refuse to marry her or wont show up on the wedding day...
So for me, as of now, he wont marry her...It jus depends whether his eyes will open in time or not...