how come?

I missed a few episodes. How come Simran and Ruhan is together as wife and hubby inffront of Naina? what happened , what kinda explanation they give to Naina, and why she still wears mangalsutre and staying with Rohan family?

Well In Goa, Ruhan told her the truth. Not sure why shes wearing the mangalsutar(i didnt see it). And shes still staying becuase Simran(i think) asked her to stay