Did Selena use Justin for his fame?

We knew there was trouble in paradise when we heard this nasty rumor. An insider claimed Sel was only with Justin to boost her star power. "Selena is pretty much just riding out the relationship because she knows he's good for her image," the mystery whisperer said. We're not buying it! Justin and Selena have been together for so long that we can't imagine it's all about fame.