"We're all on good terms. There's no more bad blood between the three of us," Dean, 26, toldUs Weekly ahead of Monday night's Season 4 finale broadcast.
"Kristina's great. You know, her and I had to sit down and talk to each other and hopefully there's a time that we can figure it out and see what happens from there. But we're just for now casually talking and seeing if there's anything there."
Dean and Kristina, 24, immediately hit it off in Paradise, and when production shut down for almost two weeks in June, Dean visited the bachelorette in her Kentucky hometown. However, when the pair returned to Playa Escondida in Mexico to resume filming, Dean realized he wanted to slow things down.
But Dean didn't just want some space; he wanted to date other women. When Danielle -- nicknamed "DLo" on the show -- arrived, Dean seemed head over heels for her, mainly because of her gorgeous looks.
"I do feel horrible about, you know, watching it back and seeing the way that they were both treated," Dean said.
Dean spent his days in Paradise going back and forth between the two women as they put up with his indecisiveness until the bachelor was given an ultimatum, and he chose to pursue a romance with Danielle. At that point, Kristina quit the show and told the cast she deserved to find a man who would value and appreciate her, as well as put her first.
"I have like 20,000 comments on my Instagram page, it's crazy," Dean revealed. "But they're all like, 'You're such a douche bag, I hope you die, I hope you never find love.'"
When Bachelor in Paradise's finale airs September 11 on ABC, fans will learn whether Dean and Danielle's relationship failed or flourished following Kristina's exit.
Dean also told Us that he's upset Kristina, and Danielle especially, have received social-media criticism and hate as a result of the love triangle.
"I feel really, really bad about Danielle has been treated and how she's receiving so much negativity on her social-media outlets. It's so unfair to her. So for like those reasons, the reasons of other people receiving negativity because of me, I regret that," Dean said of his behavior.
Danielle has apparently taken heat for stealing Dean away from Kristina in Paradise, although many fans would simply blame Dean for juggling two bachelorettes and leading them both on.
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"I think Dean realized he really, really effed up," Chris toldPeople at the finale taping.
"I think he realized that maybe he's effed up too much, too big. There's some things he can't come back from. It'll be love lost and a lesson learned. But I felt like it's not over between him and Kristina."