Reality TV
Rex Features
The pair split just before Christmas, according to Us magazine.
"They didn't want to make a big deal about it." said a source. "[David] has a lot of options and wants to explore them. He doesn't want to be tied down."
The source also claimed that reports Cook proposed to Caldwell with a Tiffany diamond were not accurate.
"That rumour was not true," they said. "The relationship just sort of dissolved."
Cook started dating the American Idol season 2 contestant in May 2008 after he asked her out during a red carpet interview.
Related Stories
Tube Talk
Fresh Prince of Bel-Air - Tube Talk GoldNow this is a story all about how Will's life got flipped, turned upside down...
TV Interviews
'Apprentice' Adam blasts 'superfan' JadeThe latest fired candidate also reveals that he was behind Azhar's tiny shorts.
TV Ratings
'Long Lost Family' finish seen by 4.5mLong Lost Family bows out with a solid 4.5m for ITV1 in the 9pm hour.
TV Recaps
'Homeland' finale: Have your sayHomeland's incredible finale is reviewed by Digital Spy. Share your verdict.
