Sienna Miller has agreed with what the tabloids have been saying for the past couple years – she’s really thick when it comes to who she romances.

The Alfie star, 27, told British GQ magazine that she now regrets her relationship with Balthazar Getty, a romance which, in the end, was the sole cause of the Brothers & Sisters star’s divorce from then-wife, Rosetta.

Miller admitted that the relationship “probably looked awful,” adding that she “probably [seemed] like not a particularly nice person, not a girl’s girl.”

The actress continued: “I do think sometimes people get morally superior without understanding situations. And the situation I got into was not ideal, but it happened and if I could go back and be more responsible, I would.

“Well, I probably would be less naive about ignoring the fact that people care,” Miller said, in hindsight. “I’ve always kind of done exactly what my instincts said. I have a good brain on me, but I’ve never really used it when it came to making decisions about love, which has been a blessing and a curse.”

The star added: “I definitely have been foolish. I’ve made apologies to people I needed to, but I can’t apologize to people I don’t know for things they don’t understand.”

However, while the actress was more than willing to agree that she had been foolish in her past relationships – particularly the one with Getty – she got a might defensive when asked if she was “sexually manipulative,” claiming that it was reputation only, and not who she really is.

“I’m supposed to be this complete slapper, that’s my reputation,” Miller explained in the September issue of the magazine. “But actually I was in a relationship from 19 to 21 with Dave [Neville]; 21 to 24 with Jude [Law, who infamously cheated on her with her children's nanny]; then 25 to 26 with Rhys [Ifans], and then Balthazar.

“And then a few dalliances, three months here and there, but I’ve never been like a shagger,” she said. “I’ve actually been kind of single for the past year. I’ve had somebody on the end of the phone maybe [like a booty call?], but I haven’t been living with anyone or been in a proper relationship, and it’s been really great.”

“I’m completely on my own,” Miller added. “I think I’ve grown up a lot.”

Miller has recently been globe-trotting as she promotes her new action film, G.I. Joe, which opens in Australia today.

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After seeing photos of Sienna Miller in a topless clinch with married millionaire Balthazar Getty on Staralicious yesterday, a friend of the actress has hit back at the claims made, which suggested Miller was a “home-wrecker.”

“Sienna Miller is not a home-wrecker,” a friend told Usmagazine.com earlier today.

The pal added that just because the Edge of Love star was prancing around naked with a married man, that didn’t necessarily mean Miller had destroyed his marriage.

“It’s been over with [Getty] and his wife for some time,” said the friend. “I believe he’ll be making an announcement [regarding his marriage] shortly.”

Still, it’s a little bit ironic, isn’t it? Back in 2005, Sienna kicked up quite a stink when then-fiance, Jude Law, infamously cheated on her with his children’s nanny, Daisy. Miller then cheated back in retaliation.

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Well, it’s official: Sienna Miller is a home-wrecker!

There’s no way the Alfie star can claim she didn’t split up oil tycoon Balthazar Getty and his wife after she appeared topless on a balcony with the soon-to-be-divorced millionaire over the weekend.

So much for the pair wanting to keep their affair a secret…

After seeing these photographs, Miller’s former flame, Rhys Ifans, has finally admitted he’s lost her and decided it’s about time he moved on.

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It appears Miller’s ex-beau Rhys Ifans has every reason to think he was dumped for another man, with the Alfie star reportedly in a “serious relationship” with a married oil tycoon.

News of the World has revealed that Miller is now dating oil millionaire and father-of-four Balthazar Getty. The pair have been spotted together a number of times since Miller’s split from Ifans, and Getty’s wife has since fled the country with their children, devastated at her husband’s infidelity.

A source explained that Miller and Getty had hoped to keep their affair a secret. “They went to great pains to find a place where they thought nobody would find them,” the source said. “They daren’t go out together, so they [spent] most of their time inside. When they do leave, they go separately.”

Apparently, Miller was so intent on keeping her love affair with the oil heir secret from the press that she encouraged the rumours that she was dating former flame and co-star Matthew Rhys, even though the rumours angered Rhys Ifans, her latest dumpee.

According to a source, 33-year-old Matthew Rhys was the one who introduced Sienna – while she was still dating Ifans – to Getty. The pair first met through Rhys’ doing last summer at the Chateau Marmont hotel.

“Sienna got to know Balthazar through Matthew and they hit it off. In the past three months they have grown incredibly close,” the source said.

“Getty even secretly flew to London and Prague to be with Sienna to get to know her even better. And she’s spent this week in a Hollywood house with him.

“Even though Balthazar loves his wife and children he cannot stay away from [the actress]. But Rosetta found out about them and has now fled to Italy.

“She can’t believe her husband could do this to her. The whole family now know and everybody is devastated.”

Getty’s family aren’t the only ones who have been hurt by the secret affair. Rhys, Miller’s Edge of Love co-star, is said to feel slightly put-out by Sienna using him to keep the press off her back. He feels like an idiot, a friend said, and isn’t happy that he’s been roped into the mess his former girlfriend has created.

“Sienna tried to fight her feelings for Getty because she didn’t want to cause Rhys any more pain,” the source added.

“The whole time both of them have encouraged rumours she had dumped Rhys for Matthew because they didn’t want anybody to know the truth.

“Now Matthew feels a bit of an idiot—his friend and co-star Balthazar has nicked his old love. He’s angry he’s been caught up in the whole mess.”

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