Teen Mom 'Teen Mom OG' star Maci Bookout waiting for Taylor McKinney to propose: "Really, what is the deal?" 12/29/2015 Teen Mom OG star Maci Bookout is understandably wondering why her live-in boyfriend Taylor McKinney has yet to propose after three years together and a baby. Read More RELATED NEWS 'Teen Mom OG' star Catelynn Lowell and husband Tyler Baltierra expecting again after miscarriage'Teen Mom OG' star Amber Portwood arrested for domestic batteryBristol Palin announces she's leaving 'Teen Mom OG' after one season: It wasn't a good fit and money doesn't impress me TAGS: Teen Mom