Nick & Jessica's Troubled Year

See the highs and lows of PEOPLE.com's Most Fascinating Couple of 2005. By Emily Fromm

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NOV. 20/NOV. 26

Lachey spent his final weekend as a married man partying with brother Drew (center) and pal A.J. DiScala at a NASCAR event in Miami Beach. Three days later, he and Simpson announced the end of their three-year union ("This is a mutual decision," they said in a statement). Simpson then headed solo to Waco, Texas, to spend Thanksgiving with family.