Mary-Kate Olsen's Loves & Hookups

Who is Mary-Kate Olsen dating? Who Mary-Kate Olsen dated; list of Mary-Kate Olsen loves, ex boyfriends; breakup rumors. The loves and relationships of Mary-Kate Olsen, listed by most recent. She's dated quite a few people including Stavros Niarchos III, and also some randoms. It's also rumored that she dated Jonah Hall? Hmm...
  • Lapo Elkann
    Photo: Metaweb (FB) / Public domain
  • Jonah Hill
    Photo: Fredrick Brown / Getty Images
  • Nate Lowman

  • Heath Ledger
    Photo: Metaweb (FB) / Public domain