All joking aside, I totally agree. I mean there's definitely a homoerotic undercurrent between Bats/Joker but I think a lot of the "Batman. Honeycakes?" type stuff is more about goading and taunting than anything.
Oh and there's absolutely no way whatsoever Batman would do that -- sleep with the psychopath who killed Jason Todd, murdered Comm. Gordon's second wife, paralyzed Babs, (and IIRC briefly drove Catwoman mad), and terrorizes Gotham? NO. It goes against everything he's about. NO, NO, NO.