It looks like Leah Shirley will have quite a few step siblings if her mom, “Teen Mom OG” star Amber Portwood, marries her fiancé Matt Baier. In a sneak peek of the upcoming season of the MTV docuseries, Leah’s ex-fiancé, Gary Shirley, accuses Matt of having seven children, and it appears his claims may be true. 

In the sneak peek of “Teen Mom OG” Season 6, Amber, 25, and Gary are shown fighting for custody of their 7-year-old daughter Leah. In one scene Gary visits an attorney where he reveals Matt, 44, has multiple offspring. “She don’t even know about this,” Gary says of his ex. 

“I’ve been with this man for over a year,” Amber yells at Gary in another scene from the trailer. “I think I know him.”

Watch the sneak-peek video below:

Unfortunately for Amber, it appears the rumors are true. The Ashley’s Reality Roundup reports that there are child support cases filed against Matt for “at least seven children” by with cases filed by “five different woman in several states.”

Matt has reportedly acknowledged having two children in the past, an 18-year-old daughter and a 13-year-old son, both whom live in Massachusetts. The Ashley uncovered that he also has a 19-year-old daughter and 25-year-old son in South Dakota, a 22-year-old daughter and 23-year-old daughter in Minnesota -- both have at least one child, making Matt a grandfather -- and a 5-year-old son in Massachusetts. The Ashley did not share the offspring’s identities, but revealed a majority of them share Matt’s last name. 

Despite the controversy, it appears Amber plans to stick by her man. She took to Twitter on Wednesday night revealing that she’s not a fan of the negativity surrounding her fiancé.

Amber and Matt announced their engagement in March after a “Teen Mom OG” trailer showed him proposing. “Teen Mom OG” viewers were introduced to Matt in April. Amber revealed on camera that they met on Twitter and he moved from Boston to Indiana to live with her after being friends for six months. Matt’s proposal was featured in a later episode.