The Revolutionary Road actress, 35, separated from her film director husband Sam Mendes in March and hoped to have found a new life with model Louis.

But despite being "very grateful" to the hunk, the pair are thought to have broken up so Kate Winslet can "concentrate on her career and children".

A source said yesterday: "Louis was just what "Kate Winslet" needed after her split from Sam and they had a wonderful time which helped her move on."

When asked about the break up, Louis, 35, said: "Unfortunately, I don't talk about my private life."

After getting married twice and romancing model Louis Dowler for four months, Kate Winslet has now realized that said she wants to be alone.

Kate Winslet even introduced him to her parents, Sally and Roger, just weeks into the relationship.

"Louis was just the tonic Kate Winslet needed after her painful split from Sam and they had a wonderful time," the Daily Mail quoted a friend as saying.

"However, they have realised their relationship isn't working and Kate needs space to be on her own.

"Louis was all for supporting Kate in Chicago and has bonded really well with her children.
Kate Winslet has reportedly broken up with boyfriend Louis Dowler.

Kate and director husband Sam Mendes, 45, announced their separation in March after 7 years of marriage.
The couple first met at a mutual friend's party shortly after Kate Winslet announced the end of her marriage to Sam Mendes.

"Louis was just the tonic Kate Winslet needed after her painful split from Sam and they had a wonderful time," a friend close to the couple told the Daily Mail.

"However, they have realised their relationship isn’t working and Kate Winslet needs space to be on her own.

82nd Annual Academy Awards - Arrivals

NEW YORK: Friends have dismissed reports that Rebecca Hall was the reason behind Kate Winslet and Sam Mendes' split. Rumours were abuzz that 27-year-old actress Hall was the reason the couple split after seven years, reports The New York Daily News.
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According to the Daily Mail, Mendes was charmed by her after working with her in his 2006 film Starter for 10, and even more so when she starred in his Bridge Project theatre company shows in New York and London.

"When Kate found out that Sam had grown close to Rebecca, she was upset. Rebecca is totally Sam's type - a thespian mix of brains and beauty," a source "close to Winslet" told the paper.

However, now pals of both Hall and Mendes have denied the claims.

"Yes, they know each other, but that's about it," says an insider close to Hall, who insists, "Rebecca has absolutely nothing to do with their split." In fact, says the source, "she's friends with Kate, too."

"She thinks they are both wonderful people, and it's just not appropriate to look towards Rebecca as the reason [for the split]. This is between Sam and Kate."

A representative for Mendes confirmed saying, "There is absolutely no truth to this. Sam and Rebecca are professional colleagues. That's it."

http://www.dnaindia.com/entertainment/report_rebecca-hall-not-behind-kate-winslet-sam-mendes-split_1360508

Date of Birth
5 October 1975, Reading, Berkshire, England, UK

Birth Name
Kate Elizabeth Winslet

Nickname
English Rose
Corset Kate

Height
5' 6½" (1.69 m)

Mini Biography

Ask Kate Winslet what she liked about any of her characters, and the word "ballsy" is bound to pop up at least once. The British actress has made a point of eschewing straightforward pretty-girl parts in favor of more devilish damsels; as a result, she's built an eclectic resume; that runs the gamut from Shakespearean tragedy to modern-day mysticism and erotica.

Born into a family of thespians -- parents Roger Winslet and Sally Bridges-Winslet were both stage actors, maternal grandparents Oliver and Linda Bridges ran the Reading Repertory Theatre, and uncle Robert Bridges was a fixture in London's West End theatre district -- Kate came into her talent at an early age. She scored her first professional gig at 11, dancing opposite the Honey Monster in a commercial for a kids' cereal. She started acting lessons around the same time, which led to formal training at a performing arts high school. Over the next few years she appeared on stage regularly and landed a few bit parts in sitcoms. Her first big break came at age 17, when she was cast as an obsessive adolescent in Heavenly Creatures (1994). The film, based on the true story of two fantasy-gripped girls who commit a brutal murder, received modest distribution but was roundly praised by critics.

Still a relative unknown, Winslet attended a cattle call audition the next year for Ang Lee's Sense and Sensibility (1995). She made an immediate impression on the film's star, Emma Thompson, and beat out more than a hundred other hopefuls for the part of plucky Marianne Dashwood. Her efforts were rewarded with both a British Academy Award and an Oscar nomination for Best Supporting Actress. Winslet followed up with two more period pieces, playing the rebellious heroine in Jude (1996) and Ophelia in Kenneth Branagh's Hamlet (1996).

The role that transformed Winslet from art house attraction to international star was Rose DeWitt Bukater, the passionate, rosy-cheeked aristocrat in James Cameron's Titanic (1997). Young girls the world over both idolized and identified with Winslet, swooning over all that face time opposite heartthrob Leonardo DiCaprio and noting her refreshingly healthy, un-emaciated physique. Winslet's performance also garnered a Best Actress nomination, making her the youngest actress to ever receive two Academy nods.

After the swell of unexpected attention surrounding Titanic (1997), Winslet was eager to retreat into independent projects. Rumor has it that she turned down the lead roles in both Shakespeare in Love (1998) and Anna and the King (1999) in order to play adventurous soul searchers in Hideous Kinky (1998) and Holy Smoke (1999). The former cast her as a young single mother traveling through 1960s Morocco with her daughters in tow; the latter, as a zealous follower of a guru tricked into a "deprogramming" session in the Australian outback. The next year found her back in period dress as the Marquis de Sade's chambermaid and accomplice in Quills (2000). Kate holds the distinction of being the youngest actor ever honored with four Academy Award nominations (she received her fourth at age 29.)

Off camera, Winslet is known for her mischievous pranks and familial devotion. She has two sisters, Anna Winslet and Beth Winslet (both actresses), and a brother, Joss. In 1998, she married Jim Threapleton, whom she met on the set of Hideous Kinky (1998); the pair had a daughter, Mia, in October of 2000. They divorced in 2001. She later married director Sam Mendes in 2003 and has since given birth to their son Joe.

source:http://www.imdb.com/name/nm0000701/bio