Peter opened up about the reasons why he and Madison officially split during a Tuesday appearance on Nick Viall's The Viall Filespodcast, and the pilot's "biggest" issue with Madison apparently extended far beyond her virginity.
"A lot of people think it was all about sex and it was all about saving herself for marriage and that was 'the biggest thing Peter can't do' -- which was frustrating to see because, you know, to be honest, that wasn't the biggest thing for me," Peter said.
Peter went on to reveal what would have turned out to be a huge problem in their relationship.
"Again, I respect Madi and always will, but it was other things, like, she was also saving herself for just being able to travel with her significant other until marriage," Peter told Nick.
Peter explained that while he and Madison could travel together, every destination -- domestic or international -- would be a big production because they'd have to book and sleep in separate hotel rooms.
In addition, Peter revealed Madison wasn't willing to have sleepovers in general.
"If she came out to [Los Angeles] and I had my apartment and she had hers, she wasn't going to be able to spend the night with me," Peter explained.
"That was something she had just made a decision for herself, which again I respect like no other."
But Peter said not being able to spend the night with Madison was "a big thing" for him, especially since he'd have to wait until marriage -- about two years or so, he said -- to really enjoy traveling with his love.
"That's a lifestyle thing that's so tough... and I bond a lot in relationships by spending the night together," Peter revealed.
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"Not just being physical but spending the night and waking up the next morning, having breakfast... That wasn't going to be the case with [Madison], and that would be tough to get over."
Peter got engaged to Hannah Ann Sluss during the Final Rose Ceremony of his The Bachelor season, but Peter ended up blindsiding and dumping the model in January because he couldn't give her his whole heart.
With the help of The Bachelor host Chris Harrison playing matchmaker, Peter and Madison filmed a brief reunion in California after Peter became single again.
But the fate of Peter and Madison's relationship was undecided until they met again on the March 10 finale of The Bachelor, which featured the pair openly discussing their situation and choosing to officially get back together.
Peter told Nick that he and Madison waited to hash things out live because he wanted their reconciliation to be "completely authentic."
For the last two weeks, Peter has been self-quarantining with The Bachelor contestant Kelley Flanagan. Peter insisted to Nick they're not currently dating; however, he admitted there is hope in the future for them to work out as a couple.