Sexual Curiosity 2: Secret Sins (2003)

Jackie is a socialite who believes her husband Paul is cheating on her. To find the truth she recruits Gigi, a very attractive private investigator. At the same time, elsewhere, auto-mechanic Cliff suspects his wife, Taryn is cheating on him. He hires Franky, another private eye. Are the two married partners having an affair together - or could it be there are others involved?