being bisexual is nothing to be ashamed of, nobody can control what they feel towards people or who they are sexually attracted to. do you have these feelings about women? ur wife? if you do feel that way about your wife then id say its absoloutly fine to look at other men, and youre 100% allowed to find them sexually attractive, but if your desire for these men is greater than for your wife, maybe you should sit down and discuss your feelings about your sexuality with her. If you feel that you can continue to live your life this way (which i assume you can't, thats why ur here) then do so, but you have to be true to yourself. your wifes reaction probably wont be great, and nobody knows what the furture holds, you may be happier with a man, or they may just be a fantasy figure, its only you who can define which your desire is, good luck