The season finale of Teen Mom OG is going to be explosive! In this short sneak peek Matt Baier is about to take a lie detector test to clear his name. His ex-fiancee, Amber Portwood, reportedly put him up to it because she was overwhelmed by all the cheating rumors.
So far this season, fans have seen Matt and Amber fight on camera and call of their wedding after Matt was supposedly in possession of prescription pills when he said he was sober.
Teen Mom OG airs Mondays at 9pm ET on MTV.