Uh-oh.
The Wanted supported Britney on her UK tour dates last year, and despite signing an agreement to say they wouldn't speak about the events that occurred, the boys have spilled the beans anyway.
Unsurprisingly, it was Tom Parker who decided to reveal all about Britney Spears. He said: "We signed a confidentiality thing that we should never say anything about what happened, but let's tell it anyway."
Via Yahoo OMG UK