It is a frequent debate in fandom (especially during the Tenth Doctor's era) as to what, exactly, the Doctor's sexuality is. He's displayed some tendency towards kissing women, but then there's the whole Master business. And Jack, I mean, really.
So what is it? A Gay Agenda? A Straight Agenda? Is the Doctor really asexual? Why is fandom split on this?
So, to simplify, I've created a handy dandy chart of the Tenth Doctor's episodes and any romantic tendencies therein.
Check It Out Here.