I masturbate & have sex thinking about my sister?
i am 22 yr old and i have an elder sister who is 34 years of age married & has three children, i love to have sex & i also masturbate alot, from the last 3 or 4 months back whenever i masturbate i keep thinking about my sister , that i am banging her hard & whenever i have sex with any girl i think that she is my sister & i am f**king her & this really makes me more turned on, i know its a sin & is forbidden to f**k ur own sister but really i cannot help my self & i even feel guilty after thinking about my sister that way but after sometime i feel again to think dirty about my elder sister, plz advice me wht to do coz i cannot control my self anymore & i am scared that i would do something wrong with my own sister