It is de rigeur - a given, part of Mafia culture - for a Mob guy to have or more gumars.(mistress). But, neither Vito nor Michael seemed to have had one, or even been unfaithful to their wives. The novel says Vito was "notoriously straightlaced in matters of sex," and disapproved of Fredo carrying on with cocktail waitresses. In GF, Fredo arranges for several showgirls to entertain Michael when he arrives at Moe Greene's hotel. Michael's hostile: "Who are the girls, Fredo?" and tells him to get rid of them,

Why do you think that was?