Dreams are just that ... dreams. If you husband has treated you well and you have trusted him until now you cannot base him cheating on you because of a dream because sometimes dreams are the opposite of what you are dreaming of. For example: You husband could love you very much, but because you realize there are so many marriages where the husband does cheat you are fearful he will cheat on you and this causes some anxiety and people dream to relieve stress of that anxiety. The best thing in a marriage is communication skills so sit down with your husband one night and talk about anything and you might even give a little smile and tell him you had a dream about him cheating. Husband and wife should be able to discuss anything.