Spurned lover FINALLY reveals why she used billboards to out her affair with Obama aide... inspired by the Tiger Woods scandal

A woman who became famous after publicly outing her married lover has finally revealed what motivated her extraordinary act.



Two years ago, YaVaughnie Wilkins posted billboards around New York advertising her affair with Charles Phillips, a technology executive and adviser to Barack Obama.



And now she claims her headline-grabbing behaviour was inspired by the national furore over the discovery of Tiger Woods's infidelity.



Ms Wilkins also revealed to Dr Phil that the eye-catching stunt was inspired by a billboard belonging to Oracle, the firm where her lover held the post of president.

Shamed: YaVaughnie Wilkins poses with former lover Charles E. Phillips in a poster she placed in New York

Anger: YaVaughnie Wilkins was furious to discover her boyfriend was still seeing his wife

Revelation: Ms Wilkins finally explained her unusual actions to Dr Phil on his show this week

It was in January 2010 that Ms Wilkins, then 41, put up giant posters of herself and 50-year-old Mr Phillips near Times Square and in other prominent places in New York, Atlanta and San Francisco.



The billboards - said to have cost around $50,000 each - featured a picture of the couple with the words 'Charles & LaVaughnie', along with a link to a website.

That site showed dozens of photos of the pair together, as well as love letters and other mementoes of the eight-year relationship.



In the months following the very public humiliation, Mr Phillips left his job at Oracle and resigned from the President's Council on Jobs and Competitiveness.



Home: The couple bought this $11million house in California before their break-up

Adventures: Wilkins set up a website of photos of the couple's world travels, including Sydney, right



Powerful: Phillips, circled, was an adviser to U.S. President Barack Obama

Now Ms Wilkins has revealed to Dr Phil that she was unaware Mr Phillips and his wife were still together during her relationship with the tech mogul.



She described the moment she first realised, 'Oh my God, I'm a mistress, I'm not his girlfriend', saying that the realisation had sickened her.



The next step was the idea to take revenge on Mr Phillips by using a billboard, which came from an Oracle advert which Ms Wilkins drove past on the highway.



'I just thought, "If Oracle can put up a billboard I'm going to put up a billboard,"' she told Dr Phil.



'Then I just let it go and moved on until the Tiger Woods issue happened.'



Golf megastar Mr Woods was revealed to be a serial philanderer in late 2009 - not long after Ms Wilkins received an anonymous tip-off that her boyfriend Mr Phillips was still in a relationship with his wife, according to an interview with her cousin from the New York Post.



Reconciliation: Phillips is back living with his wife Karen (centre) and their 10-year-old son in New York

Pressure: Phillips said he wished Wilkins well after intimate photos posted online forced him to admit the affair

Ms Wilkins told Dr Phil that outing her ex was an act of defiance: 'This was my way to say I was significant, I was not a mistress.'

She apparently believed that he was separated from his wife throughout the course of the affair.

The couple's extra-marital relationship was so serious that she says they even bought an $11million house in California together.

After news of the affair broke, Mr Phillips issued a statement saying: 'I had an eight-and-a-half year serious relationship with YaVaughnie Wilkins.

'My divorce proceedings began in 2008. The relationship with Ms Wilkins has since ended and we both wish each other well.'



High-profile campaign: Wilkins paid $50,000 for each poster - including this one in New York

Promises: Wilkins put the love notes sent from Phillips during their affair online

The website created at the time by Ms Wilkins showed Mr Phillips and her standing arm-in-arm on the Great Wall of China and posing in Sydney wearing matching 'Australia' jackets.



One of the photo albums from 2001 was set to a karaoke performance of the Smokey Robinson song Cruisin', where a man and a woman can be heard singing: 'This is not a one-night stand.'



There was also a huge collection of notes from Mr Phillips.



One gushed: 'You're all that matters to me.' Another read: 'I have never met a woman as fascinating as you. You are exactly what I've been looking and waiting for.'



Miss Wilkins wrote: 'Charles, You have my heart for ever - I love you so much.'



California-based web designer Bela Kovacs claimed he was asked to build the site, charlesphillipsandyavaughniewilkins.com, as 'a present for Charles'.

Revenge: YaVaughnie Wilkins paid for three posters, which baffled Americans when they first appeared

Details: Wilkins' website detailed photographs dating from 2001