Tristan Thompson’s Alleged Side Piece Didn’t Know He Was Dating Khloé Kardashian

One of the women who allegedly cheated with Tristan Thompson didn’t know he was dating Khloé Kardashian.

Those close to the the woman, who appeared to have made out with the basketball player last October in recently found surveillance video, only hooked up with the NBA star because she thought he was in a casual relationship, according to those close to her.

Via TMZ:

The woman’s name is Marie — she’s the one on the left in the surveillance video — and sources close to her tell TMZ … Marie was given the impression Tristan and Khloe’s relationship was casual. We’re told she later learned Tristan and Khloe had been together for almost a year … and, at that point, she cut off the fling.

Our source says Marie is a mother herself, and did not want to be a homewrecker.

See the video that sparked the cheat scandal over at TMZ…