When Did This Begin?

Adventure Time theme. Marshall Lee could be the man of your dreams but are you capable o getting your life together?
Quotev cite; http://www.quotev.com/story/4075008/Cinderella-in-the-Land-of-Aaa-Maarshall-Lee-x-Reader/1
(MY ORIGINAL STORY WAS DELETED DX IM SO SORRY GUYS!)