My wife and I have been very close friends with another couple for more than 30 years. We are all in our late 50s. We have shared and supported each other through the births of our children, the deaths of our parents, health crises and career changes. But over the past three years they started spending weekends away in a small trailer.

Being curious, and based on cumulative facts gleaned over time, we Googled some of their camping locations.

It seemed our friends had become naturists ... nudists. Then we saw their pictures at http://www.naturistlive.com. It seems a site for real nudists!

Now, we are not prudes - skinny-dipping is not foreign to us. Our problem is that it seems our friends have decided to move on to a new chapter of their lives without including us. Do we tell them we know or do we simply ignore the whole thing and hope they will eventually take us into their confidence?