Rob and Kristen a Couple

The "are they, aren't they" debate over the relationship status between Twilight stars Robert Pattinson and Kristen Stewart has been met with vehement denial from both parties, but they just added fuel to the fire with this photo snapped of them holding hands after getting off a plane in London. Just friends, or more than friends? We don't want to break anyone's heart, so we'll let you interpret for yourself.