Peter appeared on Tuesday's episode of "Tea with Publyssity" and dished about his falling out with Kelley, whom he officially split from in February and proceeded to exchange insults with in the press.
"Listen, obviously there's two sides to every story, and yes, it's true that usually the truth lies a little bit, you know, in between both those sides," Peter said, according to E! News.
"But I said my piece, and, like, I have no desire to further that. I've moved on. I know she's moved on."
Peter reportedly acknowledged how he hasn't "heard too much about it recently" and it seems like the drama with his ex has come to an end.
"I think we've all kind of moved on," he noted, "which is cool."
Peter claimed he's harboring no ill feelings toward Kelley even though their split got pretty nasty in the spring.
"I'll always say, I truly wish her nothing but the best," Peter reportedly said.
"It was the most amazing relationship I've ever had in my life. And just because it didn't work out, doesn't mean that I think anything different of that."
On May 20, Kelley appeared on the "Chicks in the Office" podcast and said her relationship with Peter ended "really badly" in February because there were some "non-negotiables" in their relationship and the pair apparently lacked good communication.
Kelley admitted she would "just run" if she ever bumped into her ex in the streets of New York, where they both currently live.
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Kelley also revealed on the podcast Peter has childlike-hobbies such as collecting Pokemon cards and playing video games.
Kelley recalled telling Peter to "get out of my life and lose my number," which she thought was fair to say at the time.
"I was drawing a healthy boundary that I needed," Kelley claimed.
Peter then addressed Kelley's biting remarks during the May 25 episode of his "Bachelors in the City" podcast, telling his listeners that Kelley seemed to be riding the fame wave and trying to push headlines with her "calculated and disingenuous" statements.
Peter claimed he had reached out to Kelley's friend after his February breakup in attempt to open a line of communication with Kelley.
Peter recalled the friend allegedly telling him that Kelley expected a "grandiose gesture" or "big public display" to ever have a shot at being on speaking terms, which apparently rubbed Peter the wrong way since he wanted to handle his issues with Kelley in private.
Peter said he had reached out to Kelley again in May and received "zero response."
In late May, Kelley fired back at Peter for bashing her approach to speaking about their breakup.
"When there are things out there that are misconstrued, I am always going to stand up for myself, as I think everyone else should," Kelley said in a YouTube video at the time.
"The things being said about me are that I'm calculated, that I want to hit headlines, that I'm disingenuous and things like that."
Kelley said she had asked her manager multiple times to warn Peter to stop bringing up her name in the press but Peter never silenced himself.
"I will never let anyone create a narrative for me, so finally the bear was poked. There were a lot of things going on, even me being disrespected," Kelley said.
She added, "When you end badly with someone, you would think they would just try to respect you a little bit and just go their way instead of reaching out to my 'friends.'"
Kelley admitted it "sucks" she can no longer look back on her relationship with Peter and see it as having been "a great relationship" with mutual respect.
"But in my scenario, when something happened that's extremely disrespectful, you have to know your worth and you have to sit there and say, 'Good luck to you. I wish you the best in the future but I don't necessarily want you in my life,'" Kelley concluded.
After eight months of dating, Kelley and Peter announced their split on New Year's Eve. However, the pair briefly reconciled and gave their relationship another shot, until Kelley and Peter's romance ended for good in mid-February.
Prior to dating Kelley -- Peter's fifth-place finisher on The Bachelor's 24th season who got eliminated before hometown dates -- Peter had a failed engagement to his season's winner Hannah Ann Sluss.
After failing to revive a romance with his The Bachelor frontrunner Madison Prewett, who quit the show during her final date with Peter, in March 2020, Peter reunited with Kelley in her hometown of Chicago to quarantine together at the start of the coronavirus pandemic.