They really don't look very lovey-dovey (and he doesn't look happy at all). The last time they were out together in public was at one of the Academy Award after parties ... they were cold to one another then too. I hate to admit it but they do make a cute couple, so I actually hope that they do stay together.
We'll see how this continues to play out. They may make a concerted effort to appear in public together ... or things can go back to normal ... with each of them doing their own thing on their own. I guess we'll see ... and I'll be watching.