“Teen Mom 2” stars Leah and Jeremy Calvert managed to participate in an amicable divorce proceeding earlier this month, officially putting an end to their two-year marriage, but according to reports, they might not be on the best of terms. Leah’s rumored new boyfriend’s ex recently spoke out about the MTV reality star, claiming Jeremy has slammed her parenting skills.

Mandy Winnell, who has two boys with Leah’s speculated new beau T.R. Dues, spoke to Jeremy about his ex-wife’s parenting skills, In Touch Weekly reports. Mandy tells the magazine that Jeremy, 26, has labeled Leah, 23, as a “bad mom.”

“He said she’s a bad mom,” said Winnell. “If my kids are with her, they won’t be taken care of very well.”

Leah shares one daughter with Jeremy, 2-year-old Adalynn. She also has twin daughters, Ali and Aleeah, 5, with her first husband, Corey Simms.

Despite Leah and Jeremy recent finalizing their divorce and child custody agreement, Winnell says Jeremy has plans to fight for custody. Following the couple’s final divorce proceeding on June 8, Us Weekly reported that Jeremy had been granted visitation rights of Adalynn. The details of their custody agreement are unknown.

While Leah and Jeremy are said to have settled their custody issues, Winnell’s comments fall in line with a recent In Touch Weekly report which stated that Jeremy was planning to fight for “sole custody” of Adalynn. Corey was also rumored to be considering the same course of action for his twins.

According to the magazine's report, upon hearing about Jeremy’s plan to request an “emergency hearing” in an effort to obtain custody of Adalynn, Leah reportedly left Utah’s Cirque Lodge in early May, where she is said to be currently receiving treatment, in order to convince her former partners to put his custody battles “on hold.”

“She didn’t want to lose the girls,” said a source. “Now she’s taking all the necessary steps to make sure she not only takes care of herself, but also her children.”

Leah is rumored to be in rehab for her alleged issues with depression and drugs. She checked into the facility in late May and is expected to return home to West Virginia later this month.

The next season of “Teen Mom 2” premieres on MTV on July 9. The trailer for Season 6 confirms the forthcoming installment will touch on Leah and Jeremy’s martial issues.