LOS ANGELES: US actress Jennifer Aniston, seven years after her much-publicized break-up with Brad Pitt, is engaged to be married again to a much lesser known actor-screenwriter, Justin Theroux, his publicist announced.

“Justin Theroux had an amazing birthday on Friday, receiving an extraordinary gift when his girlfriend, Jennifer Aniston, accepted his proposal of marriage,” Theroux's representative told People magazine late Sunday.

According to the magazine, the couple, who both starred in the movie “Wanderlust”, started dating in May 2011.

It will be the second marriage for her and the first for him.

Aniston, 43, married Hollywood star Pitt in 2000, but the marriage ended in divorce in 2005 following reports that Pitt had been unfaithful to Aniston with another Hollywood mega-star, Angelina Jolie.

Aniston rose to Hollywood stardom while playing a charming if slightly ditzy New York coffee shop waitress, Rachel Green, in the situation comedy “Friends” that ran on the NBC network for 10 years starting in 1994.

In that role, she earned several major awards, including an Emmy and a Golden Globe Award -- along with hefty compensation. She also gained fame for her “Rachel” hairdo, copied by scores of women.

According to Hollywood media, Aniston -- along with her female costars Courteney Cox and Lisa Kudrow -- became in the final season of “Friends” the highest paid TV actresses of all time, netting a cool $1 million per episode.

In the wake of her small-screen success, she starred in a series of successful movies like “She's the One,” “The Good Girl,” “Bruce Almighty” and “The Break-Up”.

Last February, she received her own star on the Hollywood Walk of Fame, a sign of industry recognition of her talent and achievement.

Her post-Brad Pitt relationships included actor Vince Vaughn, with whom she co-starred in “The Break-Up.”But it ended in a split in 2006 as did her subsequent confirmed and reported liaisons with British model Paul Sculfor and pop singer John Mayer.

Theroux's career path is much more modest. The 41-year-old is best known for his work in the films “Mulholland Drive” and “Inland Empire.”He played John Hancock in the 2008 HBO TV mini-series “John Adams.” He directed his first film “Dedication” in 2006, which made its debut in 2007 at the Sundance Film Festival, a venue for budding American film-makers.

But the native Washingtonian has a stellar pedigree, being related to novelists Paul Theroux, Alexander Theroux and author Peter Theroux.

The engagement was largely expected as the couple was reported earlier this year to have purchased a mansion in Los Angeles's exclusive Bel-Air neighborhood for roughly $22 million.