Reports suggested Brigitte Daguerre claimed she was the third woman to have a sexual relationship with James while he was married to Bullock.
But she insists the story has gone too far.
In a statement released online, she says, "I was not his mistress. We were friends. This thing has been blown (way) out of proportion and I wanna be left alone."
Oscar winner Bullock walked out on James last week (ends19Mar10) after model and porn star Michelle McGee first made allegations the TV mechanic had been unfaithful.
James apologised to his wife and his family for the "pain and embarrassment" the story caused, but then another woman, Melissa Smith, alleged she enjoyed a series of intimate encounters with James at his West Coast Choppers headquarters in California between 2006 and 2009.
And now there's another mistress about to come forward. TV news show Extra claims the mystery woman has hired top attorney Gloria Allred to represent her. Allred currently represents two of the women who claimed to have had relations with Tiger Woods.
And with sports fans tuning in to see the return of Tiger Woods, the Scream star can't thank his pal enough for putting the range he created with musician friend Ben Harper on the big stage.
"He's a buddy of ours and he likes what we make... He's in the top 10 in the world. It's unbelievable."
The sports star's career and clean-cut image were rocked last year (09) when news of his numerous affairs behind wife Elin Nordegren's back hit the headlines.
He entered a rehab facility for sexual addiction therapy before apologising to his family, friends and colleagues in a statement last month (Feb10).
And now Woods has admitted he was "living a lie" and deeply regrets hurting his wife and his mum over the controversy.
Speaking to ESPN reporter Tom Rinaldi, the golfer says, "I was living a lie, I really was. And I was doing a lot of things, that hurt a lot of people. And stripping away denial, and rationalisation, you start coming to the truth of who you really are, and that can be very ugly...
"When you face it, and you start conquering it, and you start living up to it, the strength that I feel now. I have never felt that type of strength...
"I had a lot of low points. Just when I didn't think it could get any lower it got lower. There were so many different low points. People I had to talk to and face like my wife, like my mum. I hurt them the most. Those are the two people in my life who I am the closest to and to say the things that I've done, truthfully to them, is... honestly... was... very painful.
"(Elin) was hurt, she was hurt. Very hurt. Shocked. Angry. She had every right to be and I am disappointed as everyone else in my own behaviour because I can't believe I actually did that to the people I loved... I've made my mistakes. I have hurt so many people. I have to make amends and that's living a life of amends."
The star took a hiatus from the game at the end of last year (09), after his extra-marital affairs were exposed in the U.S. tabloids.
Woods has since apologised for his behaviour and undergone sex therapy treatment at a clinic in Mississippi.
He has also been working on repairing his marriage to Elin Nordegren, and now he insists he's ready to return to golf.
A statement from Woods reads, "The Masters is where I won my first major and I view this tournament with great respect. After a long and necessary time away from golf, I feel I am ready to start my season at Augusta."
SOUTH PARK's upcoming TIGER WOODS episode is already a hit - more than 62,000 fans have watched an online promotional clip ahead of the episode's U.S. broadcast on Wednesday (17Mar10). The comedy will make fun of the sports star's recent marital troubles, which led him to make a public apology for his indiscretions last moth (Feb10).
The Scottish actor has been enjoying the single life over the last few years, and while he has been linked to Hollywood beauties including Jennifer Aniston and Kate Hudson, he has admitted to enjoying a string of romances away from the public eye.
But Butler is worried about his private life becoming public so he's becoming more cautious about the women he dates.
He tells Men's Health magazine, "I think I get laid less now than I used to, because I'm way more paranoid now. Look at f**king Tiger Woods! I mean, I'm nowhere near as naughty as I used to be, partly because I did a lot of that when I was drinking.
"I'm not saying I've cut that part out. I'm certainly no angel. There's no smoke without fire. But here's the thing: While they're accusing me of that, I've probably been off somewhere else doing damage with someone else. I'm pretty smart like that. I know how to get away with those things."
Disgraced golfer TIGER WOODS has reportedly declined a $75 million (£46.88 million) offer to endorse Irish gambling company PaddyPower.com. The married sportsman has been dropped as the spokesmodel of several big brands, including energy drinks firm Gatorade, since news of his numerous affairs hit the headlines last year (09).
The couple has been living apart since November (09) after news broke of the disgraced golfer's infidelities.
He entered a rehabilitation facility for sexual addiction therapy earlier this year (10) before making his first public appearance since the scandal hit the headlines at a press conference in February (10), where he apologised to his family, friends and colleagues.
Nordegren was notably absent from the media gathering, fuelling speculation the couple was heading for divorce.
But the couple appears to be working on their marriage - Nordegren was spotted arriving at the Isleworth mansion with the couple's two kids on Wednesday afternoon (04Mar10).
According to TMZ.com, a moving truck showed up at the house soon afterwards and workers were seen taking things into the house.
The world's number one golf player's career and image were rocked last year (09) when news of his numerous affairs hit the headlines.
He went into hiding after a public backlash that saw him lose several lucrative advertising deals. He entered a rehab facility for sexual addiction therapy before apologising to his family, friends and colleagues in a press conference last month (Feb10).
But Woods' caddy Steve Williams - who has worked with the star since 1999 - is fuming with the 34 year old, and is adamant he would have exposed Woods if he had been privy to the affairs.
Williams tells New Zealand network TV3, "I'm a straight-up sort of person. If I had known something was going on, the whistle would have been blown.
"Of course I'm mad at him, why would you not be? I'm close with his wife and he's got two lovely children and he's let them down."
But Williams insists he will stick by Woods as he tries to rebuild his life: "When a guy's having a tough time, it's not up to me to beat him with a stick right now. He's getting enough grilling from everybody else. Tiger's one of my closest friends and he needs my support right now and I'd never think of walking away."