Kristen Stewart Has ‘Been Unfaithful’ To Robert Pattinson ‘Since Day 1′ — Report

Kristen Stewart has been cheating on Robert Pattinson since the very beginning of their relationship and her friends are actually surprised it took her so long to get caught, says a new report! Keep reading for more details!After Kristen Stewart was caught cheating on her boyfriend Robert Pattinson with director Rupert Sanders, fans were shocked, but her close friends were even more surprised she wasn’t exposed sooner! A new report in OK! magazine spills Kristen’s secrets!

“When they first got together, she was going back and forth between Rob and her ex-boyfriend Michael Angarano,” the source told the magazine. “Eventually she did end it completely with Michael, but it went on or a lot longer than Rob ever knew.”

The mag also claims Kristen had a “thing” with Twilight co-star Taylor Lautner. “Everyone knows about their friendship, but not very many people know how close they really got.” Kristen would make excuses to hang out with Taylor when they weren’t filming. “She even lied about it to Rob.” Taylor was reportedly very upset to hear about Kristen cheating with Rupert.

But there are also reports that have never been published — until now.

“When she worked on Welcome to the Rileys, she had a full-on fling with one of the production assistants. Luckily the guy had a girlfriend, so he was just as paranoid as she was and they kept it pretty well hidden.”

Even though Kristen was genuinely sad when Rob found out about her cheating, she was seen flirting with James Franco in September at the Toronto International Film Festival.