Don't get me wrong. I own the DVD of Casanova. It's one of my favourite shows of recent years.
But every story he touches becomes a love story. Dr Who, of all things, is now a love story. What will he do when Billie leaves the show? How will he and the Doctor cope?
Will the Doctor mope through Season Three as a grieving widower? Sounds like a lot of fun!
On second thoughts it actually sounds quite interesting...