I have at various times imagined that Batman is into all kinds of things — Batgirl, Catwoman (Batgirl and Catwoman), and Robin. Honestly most often it’s Catwoman, one of those “this forbidden love must be allowed to someday blossom” kinda things.
Later I did “Secrets of the Batcave Part 2” with Batman and Robin, sealed with a kiss. Who knows, maybe Batman is a swinging bisexual love machine, or he just can’t make up his mind.
A lot of other people can’t seem to make up their minds about Batman — today’s SF Chronicle has a “Highs and Lows in Batman History” which includes a Pride Indicator, or the Are-They-or-Aren’t-They Index. “Its purpose is to judge whether the development makes it more or less likely that the caped crusader and his sidekick would take advantage of our recent gay-marriage ruling.”
DC Comics doesn’t take very kindly to this kind of speculation, as artist Mark Chamberlain knows all too well. He did a bunch of watercolors of Batman, Robin (and some villains) enjoying each other’s company, um, a lot, and DC wrote the gallery and wanted all the work, sold and unsold. Read about that lunacy here.
If DC really wanted to protect the integrity of their property, they should go get all the copies of Halle Berry’s abysmal Catwoman movie and commit them to a really big bonfire.