Just a fun thought. Don't kill me for this 
Sahiba and Angad get divorced
Angad marries Seerat. Seerat continues her ideal bahu act to be in everyone's good books
Sahiba is getting on with her studies and life. One day she spots Garry in tattered clothes in a bad condition. She helps even her enemy no matter what so gets Garry to Monga house and helps him get back to his normal self. 
Garry redeems himself and gets to know about Sahiba's reason for divorcing Angad and Angad marrying Seerat.
Garry and Sahiba could enter the Brar house as fake husband and wife to expose Seerat.
Garry will leave no stone unturned to torture Seerat every second.
Eventually Jasleen could join hands with Sahiba and Garry.
This track would have all the elements. 
Angst from Angad coz he never stopped loving Sahiba. Angry at Sahiba for marrying Garry and fun to watch Garry torture Seerat and make her life miserable which would lead to the whole Brar family knowing the real Seerat.
 
 
 
 
 
 
 

 
 