Do not indulge in sexual fantasies about anyone; if they occur then you have to erase them right away with Pratikraman.
If we see the God within, then there arises no cause of attachment or abhorrence on the body.
A illicit sexual relationship with another man or woman, is absolutely prohibited. Due to wrongful sexuality, one becomes entitled to a life in hell.
Maintain your interaction in such way that your satisfaction and her satisfaction both should be taken care of.
Sexual interactions between man and woman begin the laying of the claims and demands for and against each other.
The one enjoying rightful sex can attain the human form again and he will go towards moksha.
If you experience greater happiness and pleasure in something other than sex, then you would not seek pleasure in sex.To know more read this article.
Thoughts arise in the mind and the mind is made of tubers (karmic). To know more about causes read this article.
The ultimate step for getting rid of desires is to understand that there is no happiness in any form of sexuality in any way.For more read this page.
Brahmacharya is the ultimate essence of this complex of intake and output, this living body. For more details read this article.