Tensions are at an all-time high between Farrah Abraham and Amber Portwood.

In the new trailer for the second part of the Teen Mom OG reunion special, the two engage in a bitter exchange of words. Why? Amber is still not over Farrah's on-and-off again boyfriend Simon Saran referring to Matt Baier as a pedophile.

MORE: See Maci Bookout and Taylor McKinney’s Wedding Photos!

In the trailer, Simon looked as if he wanted to apologize for his remark, but Farrah quickly stopped him, “Well, Matt does kind of look like a pedophile.”

https://www.instagram.com/p/BKQ6H1zDFMr/

Farrah proceeds to make a bold statement to reunion host Dr. Drew Pinsky, “It’s not like I’m here to hit people,” which sends Amber, who was backstage, off the edge, “That’s why you’ve been hiding all f—ing day from us, and I’m right here!”

MORE: Javi Marroquin Mocks Ex Kailyn Lowry on Instagram — See the Photo!

She continued to bring the drama onto social media by insinuating that her fellow Teen Mom star wants to be just like her.

Tune in to MTV's Teen Mom OG reunion special on Dec. 5 at 9 p.m.

Scroll through the slideshow to see the biggest Teen Mom parenting scandals of 2016!