Vanderpump Rules, eagle-eyed fans took to Twitter to point out a NSFW moment that may have hinted at the start of Scandoval.In a clip from Wednesday's episode, titled, «It's All Happening… Again,» Tom Sandoval's appears to smack Raquel Leviss' butt right in front of then-girlfriend, Ariana Madix. The cringe-worthy moment went down during one of the many pre-wedding events ahead of Scheana Shay and Brock Davies' Mexico nuptials.While it's unclear what Sandoval was doing, fans are speculating that the TomTom co-owner tapped Leviss on the backside, causing her to shriek in surprise, as she appears to swat Sandoval's hand away.Madix meanwhile, is just feet away, and is getting up to exit the room when the alleged smack went down.The moment ironically occurred after Sandoval was poking fun at Leviss for making out with Tom Schwartz, just minutes before — a scene that caused blackash of its own after Schwartz's ex, Katie Maloney, expressed her disapproval over Leviss' dalliances with her then soon-to-be ex-husband.The way the camera grabbing Sandoval smacking Rachel’s ass when they got up to leave… #PumpRules#vanderpumpRules#vprpic.twitter.com/6IdBOTPRGfAs fans of the show know, last month, ET confirmed that Sandoval and Madix called it quits after she discovered the aspiring musician was having an affair with Leviss.