Relationship with My Bhabhi And Sister

I, Ajay 21 years old, live in outskirt of village near Deoria city with 2 other family members Bhabhi and Sister. My Bhabhi is 24 years old and sister is 18 years old. My bro fell in love with a poor but very beautiful girl in 2005 who was 4 years younger and subsequently got married in 2009. After marriage my brother found Bhabhi impotent. So he used to love us as his children and started