i have some reasoon as he mention he stays in the same house as anu and her husband stays there,as he wanted to have the property ,he will be doing it... as he is roshini's so called bathijeea roshini must be making him to do this as he din't marry rashii and and got married to ranoo and rashi suffered marrying ranveer that's why.. as after sahil's dead all the property will come to anu's as varun is an abnormal child.. and rashii is suffering from cancer.
davia