Mariah Yeater, the 20-year-old woman who's claiming Justin Bieber is the father of her 3-month-old son, is speaking out in her first sit-down interview with The Insider to defend her claims.
Mariah made claims last week that she had unprotected sex with Justin backstage at his L.A. concert in October of 2010 at the Staples Center.
"He immediately took a liking to me and we just got to talking," Mariah explains to The Insider of how they met. "It was kind of me and him with other people elsewhere and then he eventually asked me, 'Would you mind if we can go somewhere and be alone?' "
"Then when we got to — what turned out to be a bathroom — his whole demeanor changed," she says. "It went from cute and gushy to just more aggressive."
What does Mariah have to say to those who don't believe her claims?
"I've provided evidence to my attorneys and it will show in court…to prove that my allegations are true," Mariah tearfully says.
Watch the clip of Mariah's Monday night interview with The Insider, below.