Sienna MillerWe've popped on our kid gloves to handle this story.

As Sienna Miller is causing some controversy.

The latest chuntering is that she's got herself a newbie blokey, but that ain't all the scandal...

This is all still at the very speculative stage at the moment but according to the Sunday Mirror, Si has shared secret dates with oil heir actor Balthazar Getty.

The reason we're so surprised at this news is that Balth is married with four children - eek.

And now the tabloids have reported that his furious wife, Rosetta, is speaking to divorce lawyers, having fled to Italy on finding out about the relationship.

Keen-eyed spies told The Sun that Sienna popped out for a bite to eat with Balth during a trip to LA back in March.

Now, we do have friends of the opposite sex we lunch with, so we're thinking that's pretty innocent.

However, some peeps are saying that Balthazar might well be the reason Sienna ditched Rhys Ifans earlier this month.Balthazar Getty

Pics have now been doing the rounds of the twosome sharing some quality time together but let's remember that doesn't make it gospel.

A source told The Sun: "Sienna's known Balthazar a while and they've spent more time together over the last four months.

"They became closer after spending time dining with friends at the Chateau Marmont in March and April. But when Sienna realised she had feelings for Balthazar, she ended her relationship with Rhys over the phone.

"She wanted to do the right thing before things really happened between her and Balthazar. Since then things have quickly got very intense between them."

But what about the chat surrounding Si and her ex Matthew Rhys?

Well, it turns out he was the one to introduce the pair as he co-stars with Balth in Brothers And Sisters.

What a complicated situation.