Grey's Anatomy Memorable Moment: Lexie and Mark Break Up Over Sloan Tweet April 14, 2011 by Rebecca Martin Related: Grey's Anatomy, Relationships , Lexie Grey , Season 6 Episode 11 Credit: Hulu Before there was the Calzona baby, Mark and Lexie broke up over a different unexpected addition to Mark's life in Grey's Anatomy Season 6, Episode 11.
