Lexie Greys been at Seattle Grace Mercy West Hospital for three years as an intern she's twenty six and has been heartbroken for a better part of a decade but she's still going strong.Well atleast she thinks she is. Mark Sloan is fourty two and a father to a sixteen year old girl and a sixteen year old boy they're twins he's raised them since there mother his wife passed away during birth. The twins have never had there father bring another woman home,But the last three years have been the most heated years of there lives.