"Scheana heard that Rob was getting very friendly with another waitress," an insider told RadarOnline.com. "She was confronted about cheating by the SURvers."
"Rob slowed up with filming after the confrontation and refused to film," the insider added. "He is focused on his show and career now, and wants nothing to do with Vanderpump Rules."
"There's a lot of skanks in this town," Lisa Vanderpump affirmed in the following scene.
RadarOnline.com exclusively reported that Valletta, 36, and Marie began dating shortly after she filed for divorce from Mike Shay last November, but they split earlier this summer. He confirmed the split in October, with insiders telling RadarOnline.com that they were just too busy for each other.
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