During the Teen Mom OG season premiere this week, Amber Portwood's fiancé Matt Baier continued to brush off RadarOnline.com's exclusive stories about his nine secret children.
But one of Baier's seven baby mamas, Kelli Maguire Nunn, refuses to disappear — and even wants to make an appearance on the MTV series' annual finale special to confront her "sleazy" ex.
"All of the women should go on the reunion show, and demand he take a DNA test," Nunn says in an exclusive interview with Radar. "He can't deny science!"
As Radar first reported, Nunn, 36, began dating the 45-year-old reality star in 2007, and became pregnant after a whirlwind romance and engagement. He left soon after their daughter's conception later that year. According to Massachusetts Department of Revenue documents obtained by Radar, he now owes her thousands in child support.
Years after he split, Nunn claims she watches her deadbeat baby daddy on TV— but it's not easy.
"It's still a bit weird for me, it's still like watching my past life, and an actress is playing me," she claims. "The stuff that he says to Amber is all the stuff he said to me."
However, she's looking forward to the rest of the world learning what she's known about Baier for nearly a decade.
"Everyone knows now he's a sleazy guy, that he isn't honest," says the mom, now happily remarried with more children. "There's something wrong with him."
Though Portwood, 26, previously stood by her man, it now seems she's beginning to agree with Nunn. On the show this week, she postponed the couple's October wedding after reading Radar's report that her man hit on fellow Teen Mom stars Farrah Abraham and Jenelle Evans before propositioning her on Twitter.