Thankee!
A Pokemon master? ;D Naw I'm kidding.
<3
I've got no problem if their orientation is unknown in the canon, if the RPer chooses to play a character as gay/straight/whatever, but if it's stated in canon that they're definitely gay ... well, that'd be breaking canon. But in alternate universe roleplays, then, I guess you can do whatever you want. There're no official rules for roleplaying, methinks =]