Each person is as individual as the circumstances they are in, therefore this question must be answered in generalizations. Sure most people, not just men, will fantasize about being with someone other than their significant other. Those who actualize this fantasy may have one or more issues that directly relate to why they cannot be in a committed, monogamous relationship. He or she may cheat due to issues that were imprinted during their formative years—such as witnessing infidelity in their parents’ relationship—or he or she may have self-esteem issues, may be commitment-phobic, may not know what love is, may be a compulsive liar… the list is enormous.

To assume that men (or women) who cheat still love their mate is absurd. The person committing the atrocity may “think” they love their partner but, in fact, they could not because if they did, cheating would not occur. If there were some physical or mental issue that the couple was dealing with and there was an agreement that the man (or woman) should go outside the bond of the relationship for physical gratification, well that is another issue and would by no means be considered cheating