Oh now i guess i feel Malvika is his step-sister ye point kaafi solid lagta hai mujhe.
I feel Anuj ke parents ka bhi divorce hua hai and this is the reason Anuj ki mother ki death ho gayi aur phir uske father ki. Aur ye baat kaafi embarrassing hai Anupama ko batane ke liye. Uff and its very very possible regarding Malvika age also ki dono ka father same ho aur mother different as Anuj parents are living in USA aur uske father ka affair chala ho kisi ke saath. Anuj many times mentioned ki Anupama bilkul uski mother jaise hai means Anuj ki real mother bahut bholi hogi and Anuj dad might be cunning and extra affair se Malvika ho chances solid hai aur ye baat to sach main Anupama ko batane se pehle wo hazaar bar sochega. Anuj ke father aur Malvika ki real mother ne Anuj ko responsiblity di ho Malvika ki.