20 Mismatched couples: The hot with the not (AP Photo/WireImage)

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Jack Nicholson is known for being a womaniser but one of his longest 'relationships' (if you can call it that) was with Lara Flynn Boyle from the series "The Practice". They split up for good in 2000, but went holidaying in France in 2006. What's the appeal of ol' Jack, we really wonder!