Tim Duncan's new girlfriend recently blocked a Twitter follower she thought was rival Miami Heat star LeBron James.

According to IBTimes.com, former Amazing Race star Vanessa Macias cited her undying devotion to Duncan's San Antonio Spurs as her motivation, writing "Umm @KingJames followed me... I had to block him. I can't have that mess around me. #GoSpursGo #Spurs Nation."

In yet another display of her loyalty, Macias, who has more than 2,000 followers overall, later added "fans are fine, but not LeBron. I just don't like him. I know it's illogical, but I just don't. And mom would disown me. "

IBT reports the overture later proved to have come from a fake James impersonator and that Macias,33, has been inundated with such fraudulent acts ever since it was revealed she and the 37-year-old Hall of Fame bound Spurs star are dating.

Macias has sat courtside at several recent Spurs games and recently told reporters she respects Duncan's desire for privacy when asked about their seemingly budding relationship.

Duncan and his wife of 12 years, Amy, were divorced over the summer in proceedings that grew so bitter she openly questioned his sexuality and he admitted he once hired a private investigator to follow her because he suspected her of cheating.

Since appearing on "The Amazing Race" reality show in 2012, Macias has settled into a broadcasting career, co-hosting a morning radio show in San Antonio and working as a stadium announcer for a pair of minor league sports franchises.