Sadistic psyche

I feel that my parents, especially my father has never been able to enjoy the act of intercourse with my mother. He has lived a major part of his life in this frustration of not hitting that spot or getting it right. Somehow, i feel quite intimidated by the thought of having it myself and is almost like i feel guilty for becoming happy when my parents themselves couldn't. I know i can't change the sexual life of my parents, but how do i get over this sense duty and guilt that prevents me in to entering in to any kind of sexual intimacy with my partner? Also, am i neglecting my mother if have sex with the girl i love and am getting married? That is the concept my mother is trying to dump on to me in various ways.. Please help

If you do not get married, your mother will never experience the pleasure of having grandchildren. Also ask the girl you love to be very nice to your mother, even if your mother is jealous and thus is not behaving well.

Of course you have a right to be happy with your girlfriend, but be discrete and do not show your love in front of your parents, if this causes jealousy.