During a Thursday appearance on On Air with Ryan Seacrest, The Bachelor star took subtle shots at Dorfman and Bristowe, who both dumped Viall at the Final 2 for other men on their respective seasons.
"Andi is a great young lady, and I couldn't be more thankful that she picked [Josh Murray]," Viall toldRyan Seacrest on his radio show of Dorfman's final decision two years ago.
Viall's comment was definitely a jab at Dorfman because she is no longer with Murray despite selecting him at the end of her The Bachelorette journey. In a memoir Dorfman released in Spring 2016, she even claimed her then-fiance had been verbally abusive to her as well as controlling and temperamental during their short-lived relationship post-show.
Viall was then asked about his almost-proposal to Bristowe for whom he had picked out an engagement ring. Viall gave a beautiful speech at the Final Rose Ceremony only to be interrupted by Bristowe, and ultimately rejected, just as he was about to get down on one knee.
"[I'm even] more thankful Kaitlyn picked [Shawn Booth]," Viall noted as the studio erupted in laughter.
Bristowe is still engaged to Booth and recently revealed they will likely get married within a year.
In addition to getting his heart broken by those women, Viall also developed a bad-boy reputation on their seasons by being aggressive, a tad cocky around the other guys and promiscuous.
Viall had sex with both Dorfman and Bristowe, and when asked about his decision to reveal on Season 10's After the Final Rose special that Dorfman had made love to him -- a public disclosure Dorfman called "below the belt" at the time -- Viall confessed it was a momentary lapse in judgment.
"I've certainly made my mistakes in the past -- that was certainly an example of one of them," said Viall, 36. "And I certainly like to be someone who is willing to admit that he makes mistakes, and also open to learning from them."
After appearing on The Bachelorette twice and the third season of Bachelor in Paradise, the running joke is that Viall has gotten around quite a bit. However, when asked to reveal the number of women he's had sex with on The Bachelor franchise, Viall noted, "It is smaller than most people assume... or suspect."
The Bachelor is Viall's fourth shot at finding love on national television, so the former software salesman said he's become immune to certain things, such as the cameras and "expecting the unexpected." Viall explained he doesn't "sweat the small stuff" or "freak out" over all the "craziness."
Viall simply said he's "living the dream" and even started his own business several months ago.