Amber Portwood's fiance, Matthew Baier, was recently accused of having secret children, and now, he's being accused of hitting on her co-star before their engagement.

'Teen Mom OG' Amber Portwood Spent Valentine's Day Without Fiance?

According to a new report, Baier was seen reaching out to Farrah Abraham on Twitter, commenting on how beautiful she was, and suggesting MTV hold a Teen Mom beauty pageant, which she would win "by a landslide."

"Thanks for the follow," Baier tweeted in early 2014, as reported by Radar Online. "I'm a big fan and u r very beautiful."

'Teen Mom OG' Amber Portwood's Fiance Is 'Conning, Manipulating' & More, Claims Former Friend

Then, after Abraham posted a message on Twitter about online dating, Baier told the reality star, "Farrah forget online dating. I'd be honored to take you out."

Portwood began dating Baier in October 2014, and became engaged just a few months later.

Earlier this month, following allegations against Baier, which claimed he had lied about several of his children, Portwood spoke out in his defense, claiming everyone has a past.

"There have been many stories and allegations surrounding Matt's past," Portwood said in a statement to MTV News. "Just as my own journey has proven, people make mistakes and should be given a second chance without being judged solely on those choices. We are happy and focused on building our future together."

For more of Amber Portwood and Matthew Baier, tune into Teen Mom OG season six, airing on MTV on Mondays at 10 p.m.