Lance Armstrong's recent split from actress Kate Hudson was caused because she was "just too needy," an associate at Armstrong's LiveStrong foundation told the Chicago Sun-Times.

The cycling champion, 36, felt the '"Fool's Gold" actress, 28, came on "too strong, too fast," said the source. He sensed "Kate was way too desperate, a woman who clearly can't be on her own without a man in her life at all times.''

Armstrong also allegedly thought Hudson was escalating the relationship into something more serious than he wanted, turning dates into family outings with her son Ryder, 4, from her marriage to musician Chris Robinson.

The source also tells the newspaper that Armstrong's relationship with singer Sheryl Crow, which lasted for three years, was successful because ''Sheryl's one very independent woman. Lance liked that."

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