My two good buddies and myself are all happily married and faithful to our wives. We're lucky enough to all be married to exceptionally attractive women, so much so that it's a big topic of conversation on the rare occasions we all get together. They like my wife's face and huge tits. The one's wife has a great rack and ass, and the other, though small-breasted, is very pretty with a spectacular ass. Here's the deal: we would NEVER cheat on them. We've asked them to take nude pictures so we can share them with each other, but they've declined. Before that, we asked to full-out swap with no success. Any advice how to get them to loosen up?