"So, I mean, this whole time you've said that you're here because you're trying to find a wife. I know what you did, and I don't know how you could do that," Caroline told Arie on The Women Tell All, as he appeared stone-faced and dumbfounded.
"I just really don't understand," she continued, "but I really hope you found what you're looking for."
After the reunion show taped in Los Angeles, Caroline discussed her surprising comments, which just aired Sunday night on ABC.
"It was so much worse than anything, ever, in Bachelor history -- I feel like it is probably the worst heartbreak in the show's history," Caroline toldThe Hollywood Reporter of the conclusion to Arie's season.
Caroline made a bold statement considering former The Bachelor stars Brad Womack and Jason Mesnick made headlines for their previous behavior on the show. Brad dumped both of his Final 2 bachelorettes at the end of Season 11, while Jason swapped his pick for the runner-up on Season 11's After the Final Rose.
Caroline said she recently spent time with the woman who gets her heart broken by Arie, but she did not share that person's identity as to avoid spoiling The Bachelor's outcome.
"You hear the story, but when you physically see the person breaking, it hurts my heart," Caroline confessed to The Reporter. "So I happened to walk into this reunion show and I couldn't help but light Arie up."
Although 29 women fought for the same guy, Caroline said most of the cast became friends and supported each other in the confusing and high-stress environment.
"We all pushed for each other," Caroline said of her The Bachelor experience. "I didn't want to step on anyone to be ahead with him."
During a separate interview with E! News, Caroline said she had been preparing herself for The Women Tell All "for a long time" and envisioned how things would "go down" between Arie and herself.
"I was really close with a lot of the girls in the house, especially a few that remained at the end. For me, it was a no-brainer, I needed to have that best friend moment, where you're like, 'Hey, I know what you did, screw you,'" Caroline explained.
FOLLOW REALITY TV WORLD ON THE ALL-NEW GOOGLE NEWS!
Reality TV World is now available on the all-new Google News app and website. Click here to visit our Google News page, and then click FOLLOW to add us as a news source!
"We all wish we could have that moment for our friends and for ourselves. I never got close enough to him to have it be about me."
Caroline then revealed how she found out about Arie's alleged wrongdoing or indiscretion.
"I had heard a little rumor along the way," Caroline told E! News, adding she initially didn't think it could be true.
"I then called and I had gotten that confirmation and I was furious, honestly. You'll see why. I'm heartbroken the way things went down, the way he handled it. I think it could've been handled much better and it wasn't."
With only two episodes of The Bachelor left, Arie currently has Kendall Long, Becca Kufrin and Lauren Burnham in the running for his heart. Previews for the rest of the season show the Bachelor telling both Lauren and Becca, "I love you," while also sharing with Kendall that he was "falling" in love with her.
Based on Caroline's Instagram account, she appears to have the closest friendship with Becca out of Arie's three remaining ladies.
To find out what situation Caroline is referring to, click here to read the spoilers for Arie's The Bachelor season, which include his current relationship status with the winner.