Britney Spears, Jason Trawick announce their engagement

CEBU, Philippines - She gave him a motorcycle for his birthday and now Jason Trawick has reciprocated with an even bigger gift: A diamond ring.

The Hollywood agent asked for the pop star's hand in marriage in Los Angeles the other day on his 40th birthday.

“Yes, we are engaged,” Trawick told Access Hollywood.

He is said to have presented her with a Neil Lane featuring a round three carat stone that features pave diamonds on the band. “It's very traditional,” an insider said.

“He picked out something he knew she would love.He surprised her after she gave him his gifts and after they had cake last night,” another source added.

The 30-year-old singer, who has just wrapped her Femme Fatale tour, hinted at the news yesterday on her Twitter page.

“OMG. Last night Jason surprised me with the one gift I've been waiting for,” she tweeted.

She then teased: “Can't wait to show you! SO SO SO excited! Xxo.”

 He did right by her father, Jamie Spears, by asking for his daughter's hand in marriage. They will put a pre-nuptial agreement into effect before they tie the knot, according to sources.

Britney first started dating Jason in early 2009 following her tumultuous relationship with paparazzo Adnan Ghalib. She says she ‘made the first move’ on Trawick, who was then her agent.

He stepped down from that role in May this year. They mixed business and pleasure again in September when she cast him to play her love interest in the video for her single Criminal.

He was widely credited with helping to steer the star in a positive direction following her 2008 breakdown.

He is also a father figure to her two sons, Sean Preston, 6, and Jayden James, 5. “Jason is just amazing with the boys,” Britney said.

This will be Britney's third marriage.

She wed childhood friend Jason Alexander, a childhood pal from her hometown of Kentwood, Louisiana, in January 2004. The star, who was 22 at the time, filed annulment papers just 55 hours later.

Six months later she became engaged to her backup dancer, Kevin Federline.

They went on to have two children together before officially divorcing in 2008. (FREEMAN)