Naman and muskaan's father

Have Naman and Muskaan completely forgotten their dad? He must have been a terrible husband but he was a very loving and caring father to both of them who took great care of each of their needs and raised them in luxury and comfort...Last time he was seen at the time of Naman-karishma's marriage. Naman and muskaan have spent a very long time with their father but now they don't seem to even miss him. I find them selfish in this regard.