Where Has The Love Gone Paul Mauchline Sexual intimacy is the major thing that distinguishes your relationship with your partner from your relationships with other people.
Sexual intimacy is also a limited resource.
If you are being intimate with people other than your partner, you are robbing and sabotaging your relationship. Affairs occur for a variety of reasons. In my opinion, the foremost reason that people engage in affairs is that they are in need of love and intimacy that they feel they are not getting from their relationship. Reality eventually sets in, as it always does, and the euphoric bubble bursts. You spend less time with your partner, and, especially, less time making love.