When he does believe her (possibly after a lot of convincing from Aditiy, especially at the last minute when he sends her to america) , he will be so hurt that after his love and devotion she would play a game with him this long and watch his sadness and think he would actually kill her. He might not trust her anymore and doubt if he could take her back. She could have returned right away but he found her with Rishi in the mall. He will eventually take her back, or decide to, but things will certainly be troublesome like Abhinav, sarkar, and all that stuff. Their love will be tested and they will have to trust eachother to get through the coming times