Well I know nothing about his private life but I got news 🙂
You probably already know this, he is currently filming Bridget Jones:The edge of reason.
Plot: The story picks up four weeks after the first film, and already Bridget Jones is becoming uncomfortable in her relationship with Mark Darcy. Apart from discovering that he's a conservative voter, she has to deal with a new boss, strange contractor, and the worst vacation of her life.
I think he's good too. He has become a romantic comedy actor, it's true, but I find him very good in playing those characters. And I really love dialogues of movies such as Notting Hill, Bridget Jones's diary, Four marriages and a funeral and so on. I think they're really cool and witty and he is so good!