Billionaire George Soros Sues Brazilian Ex Girlfriend

Billionaire's ex is suing him for $50 million, but he's fighting back with a lawsuit of his own.
3:49 | 03/13/13

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Transcript for Billionaire George Soros Sues Brazilian Ex Girlfriend
billionaire facing off with his former girlfriend in court. She's a brazilian soap star more than 50 years younger than him suing for $50 million. He's fighting back with a lawsuit of his own and john muller has the story. She is a beauty. He's a billionaire and the battle is on. George soros fighting back with court action of his own. Details making the soap opera seem tame. It is a heated he said/she said that has all the makings of a A billionaire philanthropist and sulty brazilian soap star and contentious court battle potentially worth $50 billion but this made for tv drama seemingly is playing out in real life as george soros filed a lawsuit against his former love interest adrianna ferrer. The 82-year-old financier says his former flame best known on "marysol" became angry in 2010 after he told her another of his love interests was living in an apartment soros promised her and picked up a nearby lamp that was made partly of glass and attempted to strike soros with it. The police or district attorney's office never filed a criminal case, so I believe police investigators thought there was a credibility problem on both sides. Reporter: Soros' suit comes on the heels of a similar one filed two years ago by the brazilian soap star against him in which she claims he slapped her across the face and proceeded to put his hands around her neck in an attempt to choke her. In that suit she says he tried to hit her with the lamp. This is a classic he said/she said type of lawsuit and these are difficult to prove. Reporter: He is ranked the 30th richest person in the world by "forbes" with a net worth of $19 billion and donates hundreds of millions each year to charity but thiss trying to make sure he doesne any of his morning to his former flame. Now we reached out to attorneys for both sides and received no comment. If the court documents are any indication of what's to come, this woman will be known as a courtroom doozy. Boy, I'll say, john. Let's talk to dan abrams about this. Now you have to lawsuits in the court. I guess is this george soros' way of trying to make it too expensive to -- they say in sports the best defense is a good offense and i think that's what you're seeing here. You're seeing soro some basically saying, fine, you want to sue me, you want to make these claims I have some claims of my own and some of the claims he's making is based out of the same episode. For example, they're both what kusing the other of striking them with a lamp meaning he says she hit him. She says he hit her. With this lamp. How is the court -- that's right. I don't know how they'll determine it at this point because as you heard in the thing the police sthoed up and determined that no charges would be filed. So this is going to be a very, very tough case is this how about the underlying claim. Can she really sue for breaking a promise? Well, look, it's very hard. Typically a contract, and we could have a contract orally. You could say I want to buy your car. I'm going to pay $20,000. We have a contract to do that even if we just agreed orally but you can't just say I promise to give you a car, typically, and have that be enforceable. That's called a gift. Now, there are occasionally cases where corrs will do something called detrimental reliance meaning I relied so heavily on that promise, I did so much because you made me that promise that the only thing that would be fair and just is if i get some sortf money or whatever the case may be. Those are very tough cases to win. She's got an uphill battle here but no question she I'm sure would love to settle this out of court for a certain amount of money unless this is purely vindictive on one part or the other. No. I mean, couldn't be, right. Just raising the possibility. Dan, thanks very much.

This transcript has been automatically generated and may not be 100% accurate.

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