It's all about sex and sexual confusion.
Possibly the woman in question enjoys receiving anal sex. When he finds he enjoys this he's convinced it makes him gay.
Possibly he has a fascination with being a "receiver" as opposed to a "connector" or she convinced him to have a threesome with another man.
He is assured in his heterosexuality and has found his faith shaken.
There are sexual metaphors everywhere but the best one is the reference to Doris Day. Her name is synonymous with Rock Hudson because they were always paired together in romantic comedies. Rock was a deeply closeted homosexual.
It's all about sex and sexual confusion. Possibly the woman in question enjoys receiving anal sex. When he finds he enjoys this he's convinced it makes him gay. Possibly he has a fascination with being a "receiver" as opposed to a "connector" or she convinced him to have a threesome with another man. He is assured in his heterosexuality and has found his faith shaken.
There are sexual metaphors everywhere but the best one is the reference to Doris Day. Her name is synonymous with Rock Hudson because they were always paired together in romantic comedies. Rock was a deeply closeted homosexual.