It's a tough time for Amber Portwood.
"They broke up earlier this week" an insider tells RadarOnline.com. "They have a very tumultuous relationship."
Another source says the mom of 6-year-old Leah never trusted the divorced dad, and suspected him of cheating.
Portwood recently stopped following Baier on Twitter.
But just last week, she gushed about him to her 113 thousand followers.
"I'm blessed to have you by my side through these hard times" she said. "Love you."
Baier did have his good moments. When his girlfriend's father fell into a coma in early December, Baier drove Portwood from Indiana to Florida so they could join the family at the hospital.
"All the TM's write books. What shd @PBandJenelley_1 be called. I suggest ‘Drugs before Hugs – my life as a Trainwreck' #nameJenellesbook" he posted over the summer.
Do you think Amber is better off single? Sound off in the comments.