More news is unfolding about the relationship between Tiger Woods's ex-wife and her new boyfriend, investor Jamie Dingman.

Elin Nordegren has been dating Dingman for six months, and celebrity Web site,, has reported that Dingman has had a sexual relationship with the most famous mistress of Woods, Rachel Uchitel.

In what could be a publicity stunt by Uchitel, Dingman's friends have refuted the report that Uchitel and Dingman were together, according to New York Daily News.

Unnamed sources had told TMZ that Dingman and Uchitel vacationed at a mutual friend's house in Miami in 2009, while Dingman had a girlfriend.