Ou, I kind of love this! Rumors started swirling about them being a couple back in August when they were photographed together at a charity. At the time, a rep for the actress said they were "just friends," but now a source tells Access Hollywood hey are in fact dating!
"Katie and Jamie have been dating for a while. They’re very Mission: Impossible about their romance."
In fact, According to In Touch, Katie was seen leaving Jamie's New York City hotel and took a car service to her Chelsea apartment.