I do not believe that every woman has the desire to cheat. I am single however in a relationship I never once cheated. I am in for the right reasons. I am a faithful partner.
I do believe we are all tempted at times, however temptation comes from the devil so those temptations can be overcome with good.
If one does have the desire to cheat then I would say (in my opinion) the relationship may need a makeover.