Hello ! I've not been posting for soooooo long...
But now I had this idea and I want to share it and listen to your opinions...
About the "Harry-is-a-horcrux" theory: I'm not yet convinced about that, but there's something which came up in my mind and I want to hear your opinion...
What if LV had already used one of his horcruxes ? In particular, I think that could have been Harry's blood, in GoF, when Wormtail uses it to make up Voldemort's body once again.
I must admit that's a strange theory, but it would explain that "glimpse of triumph" in Dumbledore's eyes when Harry tells him that Voldemort could touch him.
So, what do you think ?