My wife sucked my friend Robert's cock at parties a few times, and then Robert and his wife separated. He was soon very horny, so he started calling my wife Janet for sex. He later told me what was going on, since he knows I find it exciting for her to be unfaithful, and he knows Janet is pretty loose with her pussy. He figured that since I let her suck his cock, that I wouldn't mind if she helped him out with a little pu...