It's not viraaj , is it?

They are showing viraaj covered in blood suddenly n having killed the Vish kanyas ... N he seemed not surprised that sitara is a vishkanya too.. what is happening? Is it really viraaj? Or is it vrinda plotting to make sitara hate viraaj n not to consider Devi ma's signs that he is pure ... That sitara should kill him no matter what ... Because I don't think it is viraaj... 

Also there is a rumour in YouTube that viraaj n sitara were lovers in last birth n he was in fact naagraj at the time... Dunno if it's true