"I think it goes back to my one-on-one when I came back and I didn't want to share the details with the girls of my date," Krystal toldAccess Hollywood when asked about her regrets.
The 30-year-old fitness coach from Montana who currently resides in San Diego, CA, received a memorable one-on-one date with Arie early in the season in which the Bachelor brought her home to explore Scottsdale, AZ, and introduced her to his parents, younger brother and sister-in-law.
Krystal found herself above the competition after that date, thinking that no one's connection could compare to her own. She called the other girls "juvenile" and "obnoxious," but they in turn viewed her as "condescending," "fake" and "two-faced."
"So I get it now," Krystal continued. "But at the time, I was like, 'I don't want my relationship to be a focal point of the experience.' And oh my God, did that shoot me in the foot! It really did! It blew up in my face."
Krystal then went on to describe what her mentality was throughout The Bachelor journey.
"My intention was, 'Don't talk about my relationship and I don't want to know about yours. Let's compartmentalize and move on, and it totally shot me in the foot and ostracized me. Immediately I was like, 'I'm here for Arie and not for friendship,' and I didn't mean that, but that's what happens," she said.
"So looking back, I would regret that decision, [not] being more open with the girls. I was honestly singularly focused on Arie, and that's why I excel in certain areas of my life."
Not only did Krystal have issues with her fellow bachelorettes, but she also got into a fight with Arie during the season in Fort Lauderdale, FL.
Once Arie witnessed Krystal's little temper tantrum -- in which she allegedly called him "a liar" -- at the end of a bowling date, his feelings for her seemed to stall, and they never really moved forward.
"Throughout the whole process, I felt very misunderstood," Krystal admitted to Access Hollywood.
"I felt being on-camera and being on group dates and dating this one guy who was also dating all of my roommates -- I knew all that going in, but I couldn't anticipate how my emotions would take a hold of me. It was really challenging, 100 percent."
The Bachelor: The Women Tell All episode taped last week and will air Sunday, February 25 on ABC, and Krystal apparently viewed the reunion as a way to show the other women her true colors.
"[I wanted to] show who I really was, because that wasn't represented on the show, like, who I really am. So I wanted to get that across," Krystal noted.
Krystal was also asked about a couple of controversial nicknames she has recently given Arie -- including "Not Peter," referring to Peter Kraus, who finished as the runner-up on Rachel Lindsay's season of The Bachelorette and was expected to star on Season 22 of The Bachelor this year.
"I'm just going to say it was a very long audition process and I thought for the majority of it that it was going to be Peter coming into it, and so last minute -- like a week-and-a-half before I was going on -- I was told it was Arie," Krystal explained.
"I felt refreshed because I didn't know him and I didn't know who he was. I didn't watch [Emily Maynard]'s season. But I thought, 'I'm going to give him an honest shot.' And I felt I gave him a great shot!... I think [Arie] was a good Bachelor, but he wasn't the Bachelor for me. I'm definitely still looking for that one."
The Bachelor cameras also reportedly caught Krystal calling Arie "needle dick" multiple times during a conversation with fellow bachelorette Maquel Cooper, and the unaired footage was shown at The Women Tell All taping.
When asked by Access Hollywood to describe Arie's private part, Krystal replied, "I haven't seen it. I haven't seen it. I have an intuitive feeling."