It's a year of big changes for Leah, Jenelle, Kailyn and Chelsea on the exciting third season of Teen Mom 2. Each of our young moms is faced with their toddler's adventure into the 'terrible twos,' all the while confronting new sets of obstacles and challenges as they try to grow up themselves. In this season, southern sweetheart Leah must let go of Corey when they finalize their divorce. But when her new beau, Jeremy, steps into the pi
