MP John Hemming has said in Parliament that the footballer who went to court to ban people reporting claims about his private life, is Ryan Giggs.
It happened in the House of Commons on Monday afternoon, after weeks of people wondering who it was on the internet.
A judge had ruled in court that newspapers and news programmes couldn't mention his name.
But a special rule means MPs can say things in Parliament that others can't say in public.
John Hemming, a Lib Dem MP, said during a debate that around 75,000 people had already broken the secret on the internet, and that they couldn't all be put in prison for doing so.