Is it normal for a married man to have a private fantasy life?

What about even just the idea of monogamy? In our society this idea has become so out of vogue that there's this, like, men are supposed to have a private fantasy life that doesn't involve their wife. And yet a real man is completely devoted in his whole being to one woman. In that devotion, that's what St Paul says when he says that the priest is the husband of one wife, meaning that every man and woman is like an Adam and Eve in the bond that they share in marriage. They don't need to get remarried. They have a devotion and a connection between the two of them that lasts their whole lifetime. And in some way, not that they're married after their death, but in some way they will know and have this bond in paradise as well. That is seen as foolishness. How can you ever be satisfied?