I used to loathe the ending, but now I think it's perfect.
I don't consider it the end for them. It makes me sad that they won't be able to fuck as much, but I'm sure they'll be fine! I'm one of those people who can't in a million years imagine them getting married, settling down and moving to mansion in the country. I dislike the idea of Britin intensely. Especially the idea that in a year or two Justin will be back and they'll move there permanently.