Aww, that picture is just so cute. Cloti is implied so much in Advent Children and I don't understand when some Cleriths think that it's all about their favourite pairing. Aerith only gets a bit of time onscreen, whereas Tifa gets much, much, much more!
Most of them think that the scene in the picture is really about Aerith, and the empty space between Cloud and Tifa, IS Aerith.
Bizarre, I know.