Is there a secret underground world of FREE LOVE and SWINGING that no one told us about?   According to a new survey, believe it or not, 30% of people who've had affairs say their partner gave them PERMISSION to go get-it-on with someone else.

Another 18% say they didn't get permission, but they're pretty sure their partner knew they were cheating.  That means only about HALF of people who've had affairs are pretty sure their significant other doesn't know about it.  22% say they're TERRIFIED that their partner might find out, because it would ruin their relationship. 

(FemaleFirst)