Joan and Rob knew me from the local bar. We had partied together on several occasions. When He asked me if I had ever been with a man and woman at the same time, I knew we were in for a fun ride. I had never been with a husband and wife, but I had certainly had my fair share of threesomes. They invited me for a cruise out to sea on their yacht. I went downstairs and got my bikini on. Ahhh.