'Teen Mom': Then & Now
Leah Messer ("Teen Mom 2" Season 1)
Leah Messer: Then
Leah Messer had twice the stress of other young parents on "Teen Moms" -- in the form of twins Aliannah and Aleeah. Somehow she managed to graduate from high school and maintain a relationship with her daughters' father, Corey Simms. But when her boyfriend discovered she cheated with an ex, he called it quits. Only upon realizing that baby Aliannah had a brain abnormality, Messer and Simms put aside their differences and shared parenting duties. They were briefly wed, with their six-month union collapsing under the strain of their challenges.