It's a BS stereotype OP.

Most men have a 'don't fuck with ne and i won't fuck with you' attitude and really don't care if a man is gay, they just don't want to hear a man go on about his sexuality all the time. Same goes for fag hags championing the gay cause who are way more irritating than any gay man could ever be in a million years.

On a side note, a female friend of mine doesn't like lesbians because they keep staring at her tits.