It is not uncommon for both faithful mates to dream of their mate cheating on them. People dream every half hour and something as simple as someone mentioning cheating either with a group of friend or on TV, etc., can trigger a dream. It is only the last few seconds (when the individual is not in a REM sleep) before waking up that they can remember some of their dreams. If you have not cheated then there is nothing to worry about and it is simply a dream. Sometimes people are so much in love with their mate they worry they may lose them.
