Love, sex and committment can be a very complicated triangle. For some people they are all the same thing, but for others they are each rather different and distinct parts of a relationship. Before my wife and I married I made her fully aware of my desires and needs. My wife's view on this was simple. Loving another person is cheating. Emotional envolement or committment with another person is cheating. Sex with another woman is cheating. Sex with a man was something I needed which she could not provided, so as long as there is no emotional involvement or committment it is ok. As long as it does not effect our life/relationship, I keep it discrete, and I play safe she is ok with it. There are no secretes or surprizes. We have been married 20 years and this works well for us.