'I Made A Mistake!' 'Teen Mom' Star Kayla's Baby Daddy Stephan CHEATS On Her

This young mom isn't afraid to tell the truth!

In a sneak peek clip for the premiere of Teen Mom: Young & Pregnant, Kayla opens up about her boyfriend, Stephan, cheating on her and how their relationship wouldn't work out if she was not pregnant.

Things worsen for the young couple after her mother gets involved.

Teen Mom: Young & Pregnant premieres Monday March 12th at 10pm ET, only on MTV!