This subplot seemed totally gratuitous and nothing more than a crass attempt to (ahem) inject (cough) a current issue into the story. Based on Puzo's novel, Freddie was banging cocktail waitresses two at a time, so I guess that makes him bisexual. Then again if you look at how flamboyantly he dressed in the movie version maybe he was a little on the swishy side.

"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."