Have you ever watched a movie or read a book where you really wanted to change the ending? This doesn't happen to me as much when I read a Romance because Romance always delivers that happily ever after. Come to think of it, the fact that I write Romance is probably why I often have the desire to tweak endings of books and movies that aren't billed as Romances.
This occurred most recently when I watched the Viggo Mortensen movie, Eastern Promises. It's not a Romance and it's not for the faint of heart, but it is a great movie and Viggo's performance is fantastic. He plays Nikolai, a member of the Russian mafia, Vory v Zakone. Naomi Watts is the female lead, Anna, and there are sparks between the two and even a kiss. Of course the Romance writer in me hoped for more. (There was the nude fight scene though!)
(If you're going to see this movie and don't want any spoilers, you can stop here!)
The movie does have a happy ending in that we discover Nikolai isn't as bad as he seems, and everyone gets what they want to an extent. But the writer in me already had the ending scene in mind: Anna would see Nikolai on the street about a year later, surrounded by his minions. He'd see her. Their eyes would lock. Then we'd have the hope that they'd see each other again in the future and live happily ever after. Well, the director, David Cronenberg, didn't use my ending! I loved the movie, but the ending scene flashed so clearly in my mind I was actually surprised the movie didn't end that way - would've been much more dramatic and romantic than the way it actually did end.
Do you ever envision better endings for movies or books than the actual ending? I suppose that's how fan fiction and sequels got started...