Sienna's Ex: My Bad Mood Left When She Did

8/13/2008 4:10 PM PDT
This may be some insight into the Sienna Miller-factor. Rhys Ifans -- the boytoy she dumped for Balthazar -- apologized to paps last night for being such a "c***" to them in the past.

So why the change of heart? It could be because the Sienna black cloud has been busy dumping buckets on the Getty family.

Now Rhys is dating Kimberly Stewart -- who flies by in her car at the end of the vid. So the question is ...