hi nisha
when K was in luv wid S he was also in luv with her.......but there were a lot of misunderstandings between them.....like when rishi was with mehek......S supported rishi and not K and mehek.......
she went to piyush and asked him to marry her even though she loved S.......tht time P gave K a chance to get out of the marrage but she said no and got married to P.......
after that S lost his head.....he felt betrayed that P married his luv.......so he sought after destroying him.......K started supporting P.......and they fell in luv ......as S caused trouble, P and K got closer and closer...
finally K told S one day tht she is carrying P's baby.........and to him she is not K anymore she is Mrs.P.Rahega.......so finally S gave up....
but then P dies.......thats why K thinks that S murdered P to get to her.......she tries to find clues against him.....one day she finds P's wedding ring in S's closet while there was a party in S's house......she is devestated and thinks that S has surely killed him.......so she cries and goes down the stairs.......she slips and falls.........and she looses her baby........
S tells the doc to try hard to save the baby but ultimately the baby dies......so after that for many days P's death stuff was shown........S asks her many times to marry her.......but she obviously says no........
lalit and all except vassu want K to b remarried.......so lalits bachpan ke dost ka beta comes into the picture.....rahul singhania is his name i think.......anyways till the point where K is supposed to put the ring into his finger........that is during the engagement S comes and tells every1 wid proof that R is already married.......