How to control the sexual desire forever

Sir, I want to write same thing to psychiatric doctor. But again I thought to tell you also. I got married in 2012 and have been living without intrest in my life. Since I got married I have been weaping all most all the days as I extremely don't like her behaviour. Every day I think how to take divorce since that day I got married. But at the same time I think about society and kids also. I belong to purely middle class. I have two kids. My sexual meet was with her is only for to have  kids. I am not able control the desire. Initially I thought not to touch her, but after few months the thought become week and finally I approach her for ....I control  many days like five to six months without touching her. But after that time I won't be able to control sexual desire . She will not rejected me when I approach her, and she wants. But I don't want that as I don't like her. Her behaviour is like a prostitute( talking,dealing me..) Is there any medicine to kill the lust ?