I do not think this is real Mandar because if it is real Mandar then Pallavi's first marriage is still valid and marriage with Raghav is invalid. In ITV the shadi between main leads which is shown is taken very seriously and not to be messed with. So do you really think makers will take the risk to turn the Raghvi marriage invalid after all the hype it was given for a whole month. I think not. Also what kind of Amnesia forced him to forget about his family but not Pallavi . He was just married and the courtship was done through phone. So it is kind of hazy why does he remember only Pallavi's name but not his mother's. I think there will be a twist to it later . As if Mandar's marriage with Pallavi is still valid then Pallavi Raghav's romance will turn into Forbidden love affair an EMA . Do you think the FD will be ok with it? No.
Feel free to give your opinion in this topic.