Just The Two of US

After discovering her husband's infidelity, Betty, a sexually conservative woman who hasn't with him in years, seeks out the advice of her much more liberated sister, Amy, in order to save her marriage. When Amy tells Betty that the key to a successful union doesn't lie in monogamy, but in having sex with as many other people as possible while your partner watches! Betty takes Amy's advice and reinvigorates not only her stale marriage, but her long-dormant sex drive as well in ways that even Amy never imagined Betty would.