Justin Bieber certainly does not deserve this migraine headache and public relations nightmare! While we're sure most of the public and his teenage adoring fans don't believe Mariah Yeater's claims that The Biebs is the father of her toddler son Tristyn Anthony Markhouse, the story continues to gain steam in the press, forcing The Biebs to hire a PR crisis management team to deal with the fall out. The latest big reveal in this icky, sticky mess? That Yeater, 20, initially told her ex-boyfriend that he was the father, not The Biebs. This story has more drama than a mash up episode of 'Jerry Springer' and 'Maury,' fo' realz! 

"She came back here from California telling me she was pregnant with my child and I said, 'This is impossible, you've been in California two months and back here for only a week,'" Yeater's ex, John Terranova, who is 19 and resides in Las Vegas, told the New York Post.

"After I told her that's not my kid, you've only been here for a week, then she told me, 'No, I got pregnant before I left by you,'" Terranova continued. "But it didn't make sense because she had a doctor's note saying she wasn't pregnant enough for that to be possible. It didn't add up." The math doesn't sound right to us, either.

Yeater and Terranova had quite a tumultuous relationship. They met at a Vegas high school designed for students that have been bounced from other educational facilities. They dated for four years and broke up after she cheated on him. So there's another hit against her credibility!

In case you've been ignoring this whole story, Yeater said that The Biebs knocked her up when he was 16 and they had sex in the bathroom of the Staples Center on the night he performed. The Biebs has gone on record to say he's never met the woman. Indeed, the only Mariah he is making beautiful music with is Carey, on his 'Under the Mistletoe' holiday disc.

Terranova is adamant that The Biebs is, as Maury Povich would say, not the father! "I know it's not Justin Bieber," Terranova said. "She just wants money. It's a scam." Terranova's new girlfriend, the pregnant Lacy Jensen, said that Yeater is "a golddigger and just wants someone to take care of her. She was a really big party animal who got around a lot. She was a big slut. She's scandalous."

Scandalous is putting it mildly. Yeater, who slapped Terranova and is due in court to answer those battery charges, is also being investigated for statutory rape, since The Biebs would have been underage when they conceived the baby --  16 to her 19 -- and that's a legal no-no!

Bet she didn't think about that scenario when she dreamed up this story!