Not that it can't be true
Just that I don't believe this particular source. And here's why (well, besides the fact that it IS the Star):
Is Brad Pitt wearing an ASCOT in this photo?
Yeah, I'm pretty sure this must be a scene from the movie where they play a husband & wife. Not some romantic stroll down a charming Italian street.
Even in Italy, I can't see Brad, in all his stylish glory, tying a scarf around his neck.