Michael disapproves of extra marital cheating and made that clear at different times to Carlo, Tom Hagen, and later to Vincent. As for his being a hot lover, he may have been in GF I but by the end of GFII he seemed pretty cold, and in GFIII he was half dead.
"Io sono stanco, sono imbigliato, and I wan't everyone here to know, there ain't gonna be no trouble from me..Don Corleone..Cicc' a port!"
"I stood in the courtroom like a fool."
"I am Constanza: Lord of the idiots."
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