Anthony Weiner
Anthony Weiner faces fresh crisis over his online relationships. [Reuters]

The woman at the centre of the latest Anthony Weiner sexting scandal has spoken out about the controversial politician on the Howard Stern show.

Sydney Leathers told Stern and co-host Robin Quivers that New York mayoral candidate Weiner, with whom she exchanged a stream of sexually explicit texts and e-mails, would be "too busy j***ing off' to help the city.

The 23-year-old admitted thinking she may have been in love with Weiner at the height of their online liaison, but eventually decided to tell the world about the relationship when his persistence and insincerity became too much.

Leathers, who is reportedly planning to make a porn film based on her encounter with Weiner, said: "As funny as it would be to have a Mayor Carlos Danger [Weiner's online moniker], I think he's a little too busy j-----g off to do anything for the city.

"How are you going to be mayor of New York City if you're c---ing like five times a day?"

According to Leathers, she first came into contact with Weiner when she wrote to him on Facebook two years ago, expressing disappointment at reports that he had sent pictures of his penis to strangers.

A year after sending the message, she received a 'poke' from Weiner on Facebook, accompanied by an apology. Almost immediately, he began sending a stream of messages to her.

When his correspondent sent him a self-portrait in thong underwear, Weiner responded with a flurry of naked shots - but accompanied one picture with the message: "If this ends up anywhere, I know you did it."

As the pair began participating in phone sex and swapping lewd pictures with increasing frequency, Leathers says she began to harbour strong feelings for her online partner.

"Maybe I thought I was in love with him; in reality I wasn't, it was just the infatuation, and the whole situation was just really intense."

"He doesn't give a s**t"

According to Leathers, Weiner's messages soon became jealous and persistent.

"He was just this needy little b---h, basically. [He] needs his ego stroked. That's the problem.

"He was clingy with me, he would get pissy with me over, you know, guys complimenting me on Facebook, just weird sh-- like that. I'm like, 'You're married. I'm single,' you know?"

Leathers also claimed Weiner talked "more about his two cats than he did about his child or his wife" and suggested that the man whose career has been rocked by repeated sex scandals does not care about the fall-out from his online dabbling.

"I don't think he really gives a sh--, to be honest. I think he's like, "I'm Carlos Danger, I'm gonna do whatever I want. Who cares about my wife? She'll forgive me no matter what.'"

When asked why she had come forward to reveal her relationship with Weiner, Leathers said the politician's brazen hypocrisy was a tipping-point.

"What pissed me off was him on the campaign trail saying 'Oh, I've changed," and trying act like he has this perfect marriage now and everything's just peachy.

"I was like, 'bulls**t, I'm proof that you have not changed."

Embattled

Leathers' interview comes as a further blow to the beleaguered Weiner, after news that a former intern was called a "f***ing slutbag" and "little c**" after writing a comment piece about him.

Weiner's communications director Barbara Moran made the remarks about Olivia Nuzzi, who claimed interns "only worked for Weiner to get closer to Hilary Clinton".

Moran has since claimed she thought the comments about Nuzzi were "off the record".