Oh, have I ever been excited to write this post. For the purposes of this post which I am excited to write, let it be known that I am only familiar with the events and companions of the 2005 series and the first season of Hartnell’s Doctor. Also, I’m looking specifically at the person of the Doctor and how he behaves and what is in character for him, and not at the meta societal influences that have shaped the casting, writing, and acting choices made in the show.
The Time Lord we know and love is a tricky character, because we actually know next to nothing about him. We don’t know his real name, or if he even has one (although this season might change that?); we don’t know how Time Lords reproduce, or if they get married or have similar social norms. And since sexuality is tied up in gender, you have to factor in that it’s been introduced in canon that Time Lord regeneration is not restricted to one gender, and so therefore it’s difficult to put a label on that as well.
So given that we have only circumstantial evidence to go on, where do we go from here?