SilverWook said:

Sexual orientation might not even be a big deal in the SW universe. Are there even any sexual scenes in any of the books?

Some people have accused Ziro the Hutt of being a flaming gay stereotype, although there is no onscreen evidence of it.

In the Marvel comic, former Senator Simon Greyshade and his shiny pal Master Com might have been the first robosexuals though. At least the parody comic Jaxxon's 11 ran with the idea. ;)

Hutts are supposed to be both male and female, so they were probably just working with that aspect of the species. I haven't seen the Clone Wars movie though, so I don't really know how he was portrayed.