The journey began with two ordinary couples—just friends sharing an Airbnb to break up a long drive. By the end, it was anything but ordinary, as they discovered far more about one another than they ever expected. Rachel discovered that she couldn’t control herself around Marcus’s BBC. But the worst part was that her husband, Ethan, didn’t say anything. He didn’t object at all.

For Ethan, though, the worst part was probably that he couldn’t decide what he enjoyed more: watching his pretty wife go down on his big Black friend, or having Marcus’s wife, Tessa, return the favor. Watching his wife be taken by his Black friend should have crossed the line. Instead, it only pushed their boundaries.