Most people will tell you that all open and/or monogamish relationships are doomed to failure because all the couples they know who were in open relationships—even couples that had just one threeway—wound up getting divorced or breaking up. But here's the thing: almost everyone knows at least one couple in a successful open and/or monogamish relationship but they don't know they know them. That's because most couples in successful open and/or monogamish relationships—particularly the straight ones—aren't out about the fact that their relationships are open and/or monogamish. People typically find out that a couple was open and/or monogamish if that couple divorces or breaks up. If a couple in an open and/or monogamish relationship doesn't divorce or break up—if the openness contributes to their marital happiness and stability—no one ever finds out.

So, yeah, most people know at least one couple in a successful open and/or monogamish relationship. That couple might even be your pastor and his wife. And as this person points out in the comments thread...

If you go on different swinger sites or personal sites, it becomes obvious that millions of Americans are participating—and virtually everyone keeping it secret.