Hi Paulie,
Your feeling of betrayal indicate your devotion to your wife and marriage. However your subconscious is only reinterating what you believe about the fantasy. You feel like the fantasies are wrong, bad, dangerous, betraying, dark. You may be surprised how expressing this to your spouse may help both of you. Explore ways to be intimate with your spouse. In your dream you saw 2 ways to receive pleasure. Discuss them with her. See how it goes. I pray all goes well.

Belle