The two had a short interaction and they appeared to be happy for the accidental run-in, reported Us Weekly.
"They were both jovial and seemed happy to see each other, both smiling," a source said.
Though they only had a short interaction, they didn't look awkward with each other. "It didn't seem weird at all, it just looked like two old friends who hadn't seen each other for a while catching up real quick," the source added.
However, they called it quits in December 2006.