The Break-up (actually)

So in class the other day Carah brought up a very good point from a very good movie. The Break-up staring Vince Vahn and Jennifer A is a movie about a young couple who fall in love, break-up, and try to make it work again. But unlike your everyday romantic comedy they actually stay broken up. This did probably kill the movie in the box offices but I mean is it so bad that a movie called the break-up actually had the couple not get back together? Of course we all hate it at first or at some point, but how much more realistic is that. I mean its not like just because you dated someone and you broke up that five years later your going to get back together just because you ran into each other somewhere. In my mind the ending was genius in addition to a very funny movie.