Britney Spears' three-year marriage to dancer and rapper Kevin Federline continues to be one of the most controversial periods in her life and career. The former couple tied the knot in 2004 after only three months of dating and welcomed two children: Sean Preston Federline, born in 2005, and Jayden James Federline, born in 2006. The timing of Federline's whirlwind relationship with Spears ignited debate among her fans because he'd only recently split from Moesha star Shar Jackson while she was pregnant.