• Amber Portwood and Matt Baier attend The 2015 MTV Movie Awards in Los Angeles, California.

Amber Portwood and Matt Baier attend The 2015 MTV Movie Awards in Los Angeles, California. (Photo : Getty Images/Rich Polk)

Matt Baier is causing major drama in the world of “Teen Mom.” For the past several days, screenshots of Baier’s old tweets have been shared around the web, and while some of Amber Portwood’s co-stars do not seem bothered by his messages, “Teen Mom 2” star Jenelle Evans was completely unimpressed, and took to Twitter to express her grievances.

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After being asked if it were true that Baier hit on her before dating Portwood, Evans responded with the message, “Ew no,” according to Real Mr. Housewife, and right away, Portwood fired back.

In a message to her fellow “Teen Mom,” Portwood seemed to threaten Evans, telling her she’s see her in March, and stating that she better watch her mouth. She then told Evans that Baier stopped talking badly about her once they started going out. Portwood also alleged Baier now has nothing but respect for Evans.

In addition to his bad parenting allegations against Evans, Baier took aim at Kailyn Lowry in a serious of hateful tweets, many of which suggested she was unattractive. Responding to Baier’s comments during an interview with the same publication on Feb. 23, Lowry admitted to being previously skeptical about Portwood’s man, but said that she's met him before face-to-face, and at that time, he was nice. Lowry went on to note that there are likely people in her life that talk badly behind her back.

Also responding to comments about Baier's old tweets was Farrah Abraham, who took to Instagram earlier this week and shared a screenshot of an article, claiming she was Baier's first choice. After sharing the shocking headlines with her fans, Abraham posted a comment, stating that Baier's remark was not cool.

Baier tweeted to Abraham in early 2014, attempting to get a date with the "Teen Mom OG" star. Baier even went as far as to tell his followers that MTV should hold a beauty pageant for all of the girls, even though Abraham would surely win the title with ease.

To see more of "Teen Mom OG" couple Portwood and Baier, catch the first part of the reunion special on Monday night at 10 p.m. on MTV. Below the pair can be seen defending Baier to viewers.