According to psychologist Michael Brickey, author of Defying Aging and many other relationship experts, playful bantering or gentle flirting with someone outside of your marriage is harmless if proper boundaries remain intact. Those boundaries differ with each relationship, of course. What would be considered a violation in one marriage might be perfectly acceptable for another couple. Difference of opinions even occur within a marriage.
When Does Flirting Become Cheating? 9 Red Flags