"We're told they were all over each other the whole time," TMZ reported.
Robertson had tweeted a photo of a pair of wine glasses set on what appeared to be a romantic table for two complete with candles and flowers on Thursday night.
"Beautiful night... #RedWineImFine," she wrote.
Ironically, Quiessence was also reportedly the same restaurant Robertson took Flajnik to when he visited her in Scottsdale, AZ during her hometown date on The Bachelor.
Robertson, a 28-year-old model from Santa Monica, CA, got engaged to Flajnik, a 29-year-old winemaker from Sonoma, CA, when he selected and proposed to her during The Bachelor's sixteenth-season final Rose Ceremony, which was filmed in November 2011 and aired in March.
In their split announcement, Robertson and Flajnik -- who had maintained a long-distance relationship the last ten months -- stated they had "grown apart" due to "distance, time apart, and our need to focus on our respective careers."
Luyendyk, a 30-year-old professional race car driver from Phoenix, finished second on this summer's eighth edition of The Bachelorette when Emily Maynard decided to reject him in favor of fellow suitor Jef Holm.
Flajnik had gushed about Luyendyk in a Twitter posting last month.
"Had dinner with Ari last night b/c he is up in Sonoma driving IndyCar all weekend," Flajnik tweeted. "He is a solid dude who has his head on straight. I can see why everyone liked him on the show."
(Photo credit ABC)
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