As of now, there is no happy couple. Jai and Bani's relationship is totally ruined with the ONS, Jai is living in guilt and Bani is living in darkness having no idea about her husband's illegitimate affair with her sister.
Sahil has turned into a jealous and insecure husband, treating Rano depending on his mood at that moment and behaving unfairly to her even when she is not at fault.
Ranveer has always been a devil praying to God, he has no respect for women and treats Rashi like dirt and slapping her whenever he gets the chance.
Pia, don't even get me started.. she is lying,cunning,cheating and terrible person who has ruined her sister's and Pushkar's life and is living with him as a compromise and pregs with another man's child.
Aditya and Jigs are divorced long back.
There has not been any successful marriages in KS, except for Rohit and Anu's - let's see how long that lasts for until someone does something wrong. What has happened to the sancity of marriage nowadays, has it come to the point where they can't even show one successful relationship consisting of love,trust and unity?
In my opinion they should really show more working marriages rather than problems, deciet and lying in every case. If you take JB relationship, it was going well and they would have patched up nicely if the ONS didn't happen - was that necessary?