Britney Spears "wins back" Kevin Federline with a watch

Troubled Britney Spears has reportedly won back ex-husband Kevin Federline after buying him a $150,000 watch.

The pair -- who have two children together, Sean Preston and Jayden James -- decided to get their relationship back on-track following a secret easter break on the Hawaiian island of Maui, where they spent two days talking about becoming a family again with their two young sons.

When they returned from the romantic break, the Toxic star gave Kevin a belated 30th birthday gift – a stunning diamond encrusted Jacob and Co "Royal" watch.

Spears' dad Jamie -- who has control over the pop princess' affairs -- was in favor of the trip. "He personally approved the mini-vacation and birthday present purchases," says a source close to the family.

"There is nothing more he and Brit’s mom Lynne would love than for her and Kevin to get back together.

"Kevin’s whole attitude to his ex-wife has changed. He can see she is responding to treatment for her bipolar disorder, staying sober and trying to rebuild her life and career."

Kevin and Britney were married for three years.

The source added to Britain's Sunday Star newspaper that Kevin was "thrilled" for Britney when she successfully performed a cameo role on the popular CBS sitcom How I Met Your Mother two weeks ago.

But added: "Though she is again becoming the woman he fell in love with, they both know rushing into remarriage too soon could be dangerous.

"So they’re taking baby steps – and it seems to be working."

Kalie Machado, a former personal assistant to Britney, who quit last year when the troubled star was spiraling out of control, declared: "The truth is she and Kevin never really fell out of love with one another.

"But their feelings were transformed into something ugly by repeated outrageous behavior – on both sides at one time – and their marriage became a doomed love-hate relationship.

"Now she is recovering, with all the people, places and things that dragged her down swept away by her mom and dad. And she’s begun to realize she wants Kevin back and the kids."

The death of Kevin’s maternal uncle Steven Story last month also helped bring the estranged couple closer together

A friend of Federline said: "Britney called Kevin offering a shoulder to cry on and asking if he wanted her to attend a planned memorial service.

"Kevin told her he was worried the focus of attention would all be on her.

"He was relieved when she said she understood and wouldn’t go. He was impressed by her mature response and convinced that she is on the mend."