Counterexample with 2 Men and 2 Women? Men Women 2 Man A and Woman 1 have no incentive to breakup Counterexample with 2 Men and 2 Women is IMPOSSIBLECounterexample with 2 Men and 2 Women? Men Women A B 1 2 Man A and Woman 1 have no incentive to breakup Counterexample with 2 Men and 2 Women is IMPOSSIBLE !