The first couple my wife and I swapped with was when we were both 18 and they were in their late 30s. That turned out to be the first of many times my wife was with another woman. After that we changed our ad to say looking for couples with bi wives or males for gang bangs.
The scene where the MILFs take turns on the cock is exceptional. I do not know how the stud did not spunk inside one of them because the very thought of having each of them fuck themselves on my cock would have made me spunk.