Sneha! PreRish will be together forever for her. She is a readymade reason for writers.I know many people might doubt this but I have a strong feeling that after all of this Bajaj will free prerna and realize he did her wrong. She is not going to want to leave bajaj but he will tell her to go to anurag and here is where anurag will reject her and she will go back at her OWN free will to bajaj who will accept her back. And this is where the real story begins and there will be no turning back for prerna. I don't mind if this happens because she will chose to return to bajaj on her own free will. Also komilka is likely coming back. Hina isn't done with the role as per ekta.
Last season he married her for her children and then story was written for PRB involving the children.
Here Sneha was made as a foundation and then PreRish story is written.
Separation is definitely on cards once when PreRish marriage truth will come out. Once RB will let her go. Maybe not cuz of Sneha. But by then PreRish dynamics would have changed a lot than now. Slow build-up of PreRish would then come into picture.
Multiple marriages this season looks highly impossible.