Wow, it's been a while lol. Umm I haven't watched Kkusum from the VERY beginning... I think I missed nearly a month. Anyway, from what I can recollect, it was something to do with their horoscope ("kundli" if that's the right spelling). Abhay was gonna die or something , and a pundit said that the only way Abhay could be protected was if he married Kkusum, who was at that time a very simple girl. Kkusum, of course, didn't know anything about this, and happily married Abhay. It was after marriage that she felt he was acting all weird - he didn't really want to marry her, but then again, he wanted to live, so he married her. In the end she found out (I don't remember how) that he married her only to save his life. I'm not sure what happened after that, but yeah in the end she stayed with him. Then he had an affair with Eesha (played by Shweta Kwatra), and Kkusum eventually found out. After that I'm not sure what happened... the details are a bit hazy, but I think she married Abhay again, and then he had an affair again, and they seperated. Kkusum was living with the Kapoor's and Abhay was kicked out of the house. The Kkusum met Sid, who was originally supposed to be getting married to Tanya, Arundathi's daughter. But Sid fell in love with Kkusum, and after some drama Kkusum married him. She didn't love him when she married him, but then she started to. Umm and then Abhay came back into the scene... he was a good guy then I think... and Kkusum started to talk to him a lot. Reema (Sid's mother) and Sid's aunties started to fill Sid's brain, saying that Kkusum was betraying him, and she actually loved Abhay. Actually, Abhay had brain tumour and I think Kkusum was just giving him support. After some misunderstandings, Sid started to believe them, and Kkusum and Sid divorced. After they divorced, Sid found out that it was all a misunderstanding, and he called Kkusum from his car and told her he was coming for her. She was all excited, and at the same time Sid had an accident. She saw him dying, and his blood was streaked across her forehead like Sindoor. Yeah and thennnnn history repeated itself: in order for Abhay to be saved from brain tumour, Kkusum had to marry him. She did.It went on from there...
lol I don't know if you wanted this whole piece of history... but I gave it anyway.