I am an Indian boy, i am 23 and i am gay. I am frm well cultured and educated family, i cant tell my parents?

how do i tell them that i am gay, i hv friends who chat abot girls, i am suppressed, in india thr is not supportive atmosphere for gays, after 3 to 4 yrs whn my parents will ask me abt marriage wht d i answer them? i want to live with a boy who will love me. wht do i do? Can i become heteroual? Is it possible?