You've always had a thing for blood. It has made you sick and made you faint but you're fascinated still. And it's not a vampire thing. It's something closer to the ground than that.
You've watched it swirl and gush and pool. These are all things you do.
You realize now, today, tonight, that you've always had a thing for blood not because of when you saw it, but because of when you didn't.
It is the witness we cannot bear to be.
That is why you have a thing for it. Because blood tells the story you can't.