Taye Diggs and Idina Menzel have been together more than a decade. They have a kid together (3-year-old son Walker) and for the longest time, I thought they were a down-to-earth, low-key couple and I truly believed that they had a traditional, monogamous marriage. Then a few years ago, I wrote that in a post and everyone yelled at me and informed me that there are tons of rumors that they maybe have an open marriage or that he just fools around a lot (either/or). And since that day, my innocence has been lost! Now I can’t look at Taye and Idina without thinking about how he’s allegedly fooling around all the time. Ugh. Anyway, I bring that up because – surprise! – Star Mag spoke to a woman (and they gave her a polygraph too!) who claims she witnessed Taye all up on some Not Idina Lady at a club. Apparently, Taye and this lady were pretty much dry-humping behind a pillar. Damn it, Taye.

Taye Diggs may be cheating on his wife of 10 years, Idina Menzel! Taye was spotted getting frisky with a sexy brunette while partying at Emerson nightclub in Hollywood on June 19.

“Taye was hanging all over the woman at a private table,” dishes a fellow clubgoer, who passed a polygraph test at Star’s request. “At 1 am, he led her upstairs to the back of the club, and they began making out behind a pillar. They were basically dry humping.”

Most recently, the same source say Taye, 42, flirting up a storm at a Sunday night Summer Sessions event at The Colony Night Club in Hollywood.

“He was acting like a bachelor,” spills the mole.

Taye’s racy behavior will undoubtedly come as a shock to his family. This past December, he appeared on Access Hollywood and gushed over the love he has for Idina and their 3-year-old son Walker. “We’ve got a kid… it make me more attracted to her every day.”

But despite the pair’s public persona, this isn’t the actor’s first brush with infidelity. Another source confirmed Taye’s scandalous ways after she witnessed him flirting with women in May 2011 at Voyeur club: “He was on a mission to get a bunch of hot girls.”

Taye’s publicist, Marla Farrell from WKT Public Relations, tells Star that the story is “not true”.

[From Star Magazine, print edition]

Did you notice that it’s the same “source” (the one taking the polygraph!) who claims she witnessed Taye fooling around TWICE. On two separate nights? Is this chick Taye Diggs’ stalker? Or is she employed by Idina? God knows. Anyway, I guess I might believe this. I’m still disappointed though. He a dog. It ain’t right.

Photos courtesy of WENN.