Billionaire George Soros is suing his former mistress, Brazilian Adriana Ferreyr, for defamation and assault, claiming that during their relationship Ferreyr threw a lamp at him.

The claims against Ferreyr, 29, come after she filed a $50 million lawsuit against Soros, 82, in 2011, claiming he made multiple million dollar promises to her he did not keep.

In her lawsuit, Ferreyr says she was promised a $2 million apartment which he instead gave to his now fiancé Tamiko Bolton, 40.

Soros says that while they were engaged in a physically intimate relationship for several years, they had an open relationship and were able to date other people.

In 2010, when she was 27, Ferreyr said she was dumped by Soros after five years together.

She claims that during a romantic encounter in bed Soros informed her that he had given the promised apartment to Bolton who was already happily living there. Her lawsuit goes on to say that during the their argument about the apartment Soros slapped her across the face and tried to choke her. She also says Soros threw a glass lamp at her, cutting her foot.

This week Soros fought back, however, and says it was Ferreyr who threw the lamp at him and struck his forearm. He claims the cut on her foot was a result of her stepping on the pieces of the broken lamp she had thrown at him.

Ferreyr filled her $50 million lawsuit against Soros in 2011.

In the fall of 2012, Soros announced he was engaged to Bolton.

Ferreyr was born in Salvador, Bahia, Brazil and it best known for her role on the Brazilian soap opera Marisol, in which she played the adopted daughter of Marisol, Vanessa Lima do Vale.

Soros is a Hungarian-American born Schwartz György in Budapest. He is credited with helping Hungary transition from communism to capitalism between 1984 and 1989. The business magnate is the chairman of Soros Fund Mangement and has an estimated worth of $19.2 billion and is currently No. 30 of Forbes’ Billionaires list.