I commented earlier, have had my tea and come back to read the comments again. It's interesting to see all the comments, but I'm still with the majority that it's not clear what the relationship is. It's been said that it's best to have holes in the characterisation so you can put your own interpretation on it. But we could be having this discussion about any of the characters in TW and the views would be just as varied, with holes to fill in our own interpretation. What you've got though, is a lot of holes. There has to be some consistency in the characterisation and it has to be portrayed on the screen, much as I like reading fan fiction.
no subject