Despite subcultural normativity being strongly biased against bisexuality, really quite a lot of gay-identifying men have experimented with heterosexual behaviour, but are—ha! - closeted about it.
Alas the benefits of being open about a very slight sexual curiosity are probably not often great enough to make complete honesty seem worthwhile. Also such curiosity tends to signal a lack of self-knowledge and thus to an extent lack of trustworthiness, probably hence the vague stigma that many people have against dating bisexuals.
Despite subcultural normativity being strongly biased against bisexuality, really quite a lot of gay-identifying men have experimented with heterosexual behaviour, but are—ha! - closeted about it.
Alas the benefits of being open about a very slight sexual curiosity are probably not often great enough to make complete honesty seem worthwhile. Also such curiosity tends to signal a lack of self-knowledge and thus to an extent lack of trustworthiness, probably hence the vague stigma that many people have against dating bisexuals.
The Bizarre World of the Bisexual—it’s all 100% true! [1]
[1] Statement of 100% truth may not be 100% true.