I AGREE WITH tencrush HE TOTALLY THOUGHT IT WAS MICKEY.

And I actually thought he was sort of incredulously happy about it -- happy for her, anyway, and the implication that she was able to move on after losing him after all, albeit with some fairly potent mixed feelings for his own sake that he was manfully determined not to show because that would be petty. And then it turned out to be Jackie and he was simultaneously disappointed and relieved. It was, like, layered and stuff. IMO.