"The Hills: New Beginnings" star spoke openly to Cosmopolitan and didn't hold back when asked about his feelings on the couple's breakup.
After a turbulent first season reboot featuring major conflict with his former friend, Brody, and his wife, Pratt warns all gloves are off next season.
"I swear to god I’m going to light these fools up on season 2. I’ve been out here trying to be nice, let everyone get their bearings, but I’m a Tasmanian Devil," he said.
Then Pratt went IN.
Saying their marriage was fake, Pratt claims the reason why they never made it official in the US is because Brody didn't trust Kaitlynn with the family money.
"By the way, I knew their marriage wasn’t real. I already addressed it with Brody, and he said he didn’t want to marry her because he didn’t want her to have access to Linda’s money," Pratt stated.
FYI -- Brody Jenner is the spawn of Caitlyn Jenner and former model Linda Thompson. His mom's other famous ex-husband is 16 time Grammy winning songwriter David Foster.
Brody majorly shaded Pratt for not attending his wedding in Bali this season, but the star says he knew it wasn't real because he wasn't technically invited.
"I knew when I wasn’t invited to the wedding it wasn’t a real wedding, because I know if Brody was legally getting married, he would have loved to have had me there Snapchatting the whole thing," Pratt told Cosmo.
Adding there's no way he would have wasted money on a flight to a "fake wedding."
"I would have come to his bank and said, 'Pay up, pay for my ticket.' I want an appearance fee. I don’t do fake," Pratt continued.
"You want me at your fake wedding? I’ll send you a video on Cameo. Standard messaging rates apply. I appreciate him looking out for his former best friend like that," he joked.
When asked what he thought about Brody and Kaitlynn's mutual "dislike" for him, Pratt responded in the most Spencer-like way.
"I’m calling two pathological liars out for pretending to be a married couple for 12 episodes, when they’re boyfriend and girlfriend who sleep with other people. Do what you want, but don’t lie about it. I like both of you way less than you like me. How about that?" he said.
Pratt also claims that Kaitlynn is already "dating a new guy."
Speaking freely, he added, "She’s already back off the market."
Despite their mutual dislike for Pratt, he'd welcome both of them back next season.
"I want that on season 2. I want Kaitlynn Carter—never actually Kaitlynn Jenner—front and center when we come back," he said. "Let’s get her a contract because I’m very invested in following the story of her new relationship and her new life."
Continuing his rant, he added, "I’m way more excited to watch Brody and Kaitlynn being single than I was with them being a couple. Even though they were also technically single before."
Brody Jenner and Kaitlynn Carter said "I do" in Bali 13 months ago.
The couple wed in front of friends and family -- sans Caitlyn Jenner -- and their split was made public earlier this month.
Their marriage woes were a huge plot line on "The Hills: New Beginnings."