We’re going back a few years - to when Danes, 36, was a fresh faced 24-year-old.
Whilst starring in Stage Beauty together, an impressionable Danes fell in love with Crudup - despite the fact he was in a relationship with actress Mary Louise Parker.
Even worse was the fact Parker was seven months pregnant with his baby - when Billy, 47, left her for Danes.
Defending the move on Howard Stern’s show, Danes said: ‘I was just in love with him.’
‘And needed to explore that and I was 24…I didn’t quite know what those consequences would be.’
When news of their romance broke in 2003, Danes faced a particularly nasty backlash, with many seeming to side with ‘wronged’ Parker.
‘It’s OK,’ said the Homeland actress. ‘We’re friends.’
Danes and Crudup dated for three years despite the backlash against them, splitting in 2006.
Shortly after this Claire began dating Hugh Dancy, who she married in 2009. They have one child together, Cyrus, who was born in 2012.