Abhi will go somewhere..and will be cut off from everyone for quite some time. He does some real hard work and earns a good amount of money..he then comes back hoping that he could get Simran back but when he comes back, he realizes that Simran is getting married to Manu and their wedding is on the same day. So, he quietly leaves from Simran's house but when Simran comes to know about this, she wants to meet him and finds out that he is at the airport..She rushes to the airport and sees Abhi and his parents leaving for Singapore..(permanently)..
She tries to stop Abhi but he says that Simran will be happier marrying Manu etc.etc so Simran can't stop him and gets married to Manu...and Abhi leaves for Singapore..THE END...
I don't know where did Neha and Manu's wife Nagma came into picture..? Maybe the script was altered to stretch it for a longer time otherwise it would have ended by now..