I don't care.
I don't need to know their exact sexual preferences. That is not of any influence to the story. If it was, it would have been in the story and if it was in the story, it wouldn't have mattered what their preference was, because it would have made sense either way in the context of the story.
Issues of sexuality and gender are already being adressed in this show, there is no need to project them into situations where they're not.