The blame game refuses to stop between popular television actor Karan Mehra and his estranged wife-actress Nisha Rawal. 'Yeh Rishta Kya Kehlata Hai' actor has now accused Nisha of staying with another man, Rohit Sethia, in his 4BHK apartment. He also said that he is her 'muh bola bhai' and performed 'kanyadaan' at their wedding.