Britney Spears' former husband Kevin Federline has apologised to his ex-fiancee for dumping her to pursue his romance with the pop superstar.
Federline met Spears while he was working as one of her backing dancers and he was engaged to Shar Jackson, who was pregnant with the couple's second child, when he became romantically involved with singer.
He went on to marry Spears and have two sons with her before they split in 2006.
Federline has now apologised to his former fiancee on TV during an episode of U.S. show Celebrity Fit Club, which saw them both compete with other contestants to lose weight.
Jackson burst into tears and hugged her former partner after he told her his behaviour at the time had been "selfish" and acknowledged the "pain" he had caused her.
Federline said, "I've seen her go through so much stuff before the show, and I'm a big part of that. I know I've caused you a lot of pain. I've been really selfish. I guess I got so wrapped up in all this other s**t that I never really got a chance to sit back and apologise to you. I really do want you to know that I am sorry. I think I got caught up in my own selfishness. When you're in a moment like that you don't really think about anyone else.
"It's just been a wild ride the last few years and I'm sorry that you got a big s**t at the end of that stick."
Jackson accepted his apology, adding, "That meant the world to me."
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