If you're afraid to have an honest, direct, and transparent conversation with your wife about your fantasies, forget about the fantasies and learn how to simply talk to your wife. You can Google how to improve relationship communication right now and get thousands of results that set you on the right path. If you need more direct guidance, I guarantee there are relationship counselor within 30 minutes of your house that can be the shepherd you need, and your wife will probably drop to her knees...