That last post draw a bunch of comments, mostly thanks to Michael J.W. Stickings’ link from Crooks and Liars (thanks!). A few favorites:
Alek Felstiner posted on Facebook:
This is why Tim Bayliss was such an uncomfortable character for everyone else on Homicide. I think, related to your point about lesbianism not being “sex,” there’s a sense in which male homosexuality is contaminant (except perhaps, notably, in prison, where the concept of masculinity is by necessity revised, and that revision recognized and tolerated on the outside), whereas female homosexuality is tangential and easily disregarded – if not encouraged and fantasized-over.
I make that point because most narratives, especially on TV, are about redemption. Ending up in a heteronormative relationship is a satisfactory conclusion for a mainstream American audience, but it only really works if it’s a woman (who finally finds the right man). A bisexual man eventually finding the right woman doesn’t offer the same narrative closure, because he’s already been “contaminated.