It explores the dimension of intimacy as a couple, with focus on the relational dynamics of sexuality and betrayal. First, it outlines the differences between man and woman about sexuality and "unrelationable" areas in every relationship. It underlines the dialectic of betrayal. In this perspective, it describes two "types " of betrayal: that in "chat rooms", in which the other is virtual "other" and the swinging, the paradox of not-betrayal, in which the experience of other is coded by both partners.
Keywords: Couple, intimacy, sexuality, betrayal, chat rooms, swinging