Courteney Cox to adopt?

Actress Courteney Cox arrives for the premiere of her new film "Bedtime Stories" in Hollywood, California December 18, 2008. [Agencies]

Courteney Cox's sun fearand David Arquette are planning to adopt a child in a bid to save their marriage.

The couple - who have been married for nine years and already have four-year-old daughter Coco - are desperate to add to their family but Courteney, 44, has so far been unable to fall pregnant, causing arguments between the pair.

"They love each other very much, but with Courteney's intense work schedule and her resistance to adoption, David started to go out without her.

"But now Courteney's given the OK to adopting a brother or sister for Coco, David has agreed to scale back on nights out."

Courteney has previously admitted she struggled to conceive Coco, but says being a mother is "everything" to her.

She said last year: "I can't imagine life without a child - I don't even remember what it was like four years ago. Coco is everything to me. We did a lot of in vitro fertilisation, and it was tough. But we'd waited a few years before trying, and in retrospect I would say, 'Don't wait as long as I did, especially if you want more than one child.' "