Amber Portwood has reportedly put her wedding on hold.
"For the time being, Matt and Amber's engagement is on hold," a source said.
"A lot has come out through the course of filming and from various online stories. That has added extra pressure and made things difficult," the insider explained.
"Despite their issues, they are still living together and are hopeful things can be fixed."
Portwood and Baier got engaged in March 2015 after less than a year of dating.
The couple have since weathered several dramas, including Baier confirming he is the father of five children Portwood was unaware of.
The "Teen Mom OG" star was left speechless in a preview for Monday's episode as she tried on wedding dresses at a salon.
She teared up while looking at herself in the mirror, but had mixed emotions about the experience.
"I don't know," the star said when asked how the gown made her feel. "Alright, I'm ready to get out of this. Get me out of this. Now!"
Portwood, who shares 8-year-old daughter Leah with ex-fiance Gary Shirley, came to fame on the MTV series "16 & Pregnant" before "Teen Mom."
She and co-stars Farrah Abraham, Catelynn Lowell and Maci Bookout returned for a new season in April.