‘Teen Mom 2’ Sneak Peek: Leah Messer Admits to Cheating on Corey Simms

In this sneak peek of Tuesday’s all new extended episode of ‘Teen Mom 2,’ Leah Messer admits to cheating on Corey Simms just before their wedding. The couple, who are seen on the show disagreeing about big life decisions will have to make another big decision. Do they stay together, and try work out their marriage, or will they call it quits? Find out tonight on MTV at 10 pm!