The Sex And The City star has been married to fellow actor Matthew Broderick for 14 years, with whom she has an eight-year-old son James Wilke, and two-year-old twins Tabitha and Marion.
She says their marriage thrives because it takes a backseat to “so many other things” in their lives.
“We don’t talk about our marriage a lot, which is probably wise,' she tells the September issue of Marie Claire.
'There are so many other things in our lives that take precedence over the splitting of the atom of our marriage.
'We have this marvellous family, and my son and our daughters love Matthew and there's always a moment where you see him through their eyes, and it's really seductive. I think that's really great for a marriage.”
She adds: 'But we don't spend a lot of time discussing our relationship. We've figured it out, and I certainly don't want to be anywhere else.'
The 46-year-old I Don’t Know How She Does It star also reveals that while she loves being an actress, she is not so keen on the fame that comes with it, and admits that she had spent the night before her interview 'sobbing to Matthew' over a newspaper report claiming she had complained about being summoned to do jury duty.
'I should be more calloused by now, but I am so sensitive about not ever living up to anybody's worst idea about an actor who is well known,' she says. “I never wanted to be a celebrity – I never wanted to be famous.”