Cancer rules the family, old-fashioned values, and the home. Unless this Cancer man has restless Uranus compelling one of his love planets to break the rules of matrimony, you are as likely to break up his marriage as the Moon is likely to stop in her tracks.
And what is this whole seduction-of-married-men thing about, anyway? The planets may be far away, but they are not impartial. OK, Uranus may say, “Go for it!” but Saturn … oh Saturn … the god who keeps tabs on your karma — he doesn’t forget. Like Santa Claus, who makes a list of who’s naughty and who’s nice, Saturn will give you back whatever you put out. The witches say that it’ll come back three-fold! And if not in this life, well … in your next life you’ll be born a leper or an orphan or one of those poor saps who’s constantly cuckolded.