Who's the daddy now?

The couple hit it off after first being introduced by mutual friends Sting and Trudie Styler. In August 2000, their son Rocco was born, joining Madonna's daughter Lourdes by personal trainer Carlos Leon. They married at Skibo Castle in Scotland in December 2000.

Who's in charge?
Worth £227 million, Madge would be hard-pushed to find herself a man more famous than she is. To keep things sweet, she does bend to her husband's will sometimes - their Wiltshire manor house was his idea, for example. Guy, 38, doesn't seem to suffer from much of a complex where his older and more-famous wife is concerned - a documentary about the singer, I'm Going to Tell You a Secret, showed her begging him to leave the pub and come home with her, as well as looking upset when he couldn't make her show.

'He stormed out of the room when I played him some of these tracks [on her album],' she says. 'He thought it was shit. He likes songs with stories, pub music.' Since Lock, Stock... and the less well-received Snatch, Guy's career has looked to be flagging. The fact won't have been helped by 47-year-old Madonna throwing herself into work on promoting her album, Confessions on a Dancefloor. But being with Guy has softened the Material Girl. 'If you can get along with your husband and work towards loving them unconditionally,' she says, 'chances are you're going to be a lot more compassionate and a lot less judgmental towards your fellow man.'

Equally matched and loving it

Scarlett Johansson and Josh Hartnett:
These two have so much in common: both young, both great-looking, both already hugely successful. Sparks flew between them on the Bulgarian set of The Black Dahlia and they have moved into a swanky New York apartment together. A firm favourite in Hollywood, she has six films in the pipeline, while heartthrob Josh is following up his success in Lucky Number Slevin with three more movies.

Gwyneth Paltrow and Chris Martin
The Oscar-winning actress has found an equally-matched partner in the form of the lead singer with one of the best-selling bands in the world, Coldplay. Although not from the same Hollywood circles, Chris impressed Gwynnie by using his fame for a good cause, to highlight poverty in the developing world. This relationship works because they don't have to compete for attention in the same arena.

Jennifer Connelly and Paul Bettany
These two take it in turns to accompany each other on set, according to who is working at the time, to take care of their two children. Since they married in January 2003, they have preferred to live in New York rather than Tinseltown. The Da Vinci Code has made Paul a household name across the world, but dark-haired beauty Jennifer can hold her own in the acting stakes, following up her Best Supporting Actress Oscar for A Beautiful Mind with a string of hits.

Ben Affleck and Jennifer Garner
Unlike his relationship with another famous Jennifer (Lopez), Ben and Jen are much more evenly matched and her star doesn't eclipse his. Since marrying in June 2005, they have celebrated the birth of daughter Violet and are enjoying their time as first-time parents together, although both have big projects coming up.

Cameron Diaz and Justin Timberlake
Another pair who enjoy acclaim in different fields, Cam and Justin are both well-matched in terms of their success rating. He has made the difficult transition from singing to acting, and Cam is still very much in demand as a beautiful leading lady.