Although I do believe in fidelity, having been a one-woman-man throughout my life, I do fund it difficult to live with my wife as another room-mate situation becuause she has absolutely no interest in sex but her interests are focused on spiritual stuff and this complicates my life due to my want to have my libido satisfied too. Under such circumstances, what if I stray out of this commitment? Would that be considered a serious sin, or an excusable alternative to ending up master-bation? I am past 70 and what can I do under such situation? There is no lie here, and no deception here. I am willing to face the ultimate truth too. In the old days it would have been possible to have a relationship outside marriage socially acceptable, but it is probably no more a venue.