The Hills are alive with the sound of rumors. Spencer Pratt is claiming that Kaitlynn Carter cheated on her husband Brody Jenner with Miley Cyrus before she and Jenner split.

“It's tough for me to listen to Kaitlynn complain about people talking about her allegedly open relationship with Brody when we know she had a thing going with Miley,” he told Cosmopolitan. “She already had something going on with her when these scenes were filming—maybe not physically, but definitely emotionally.”

“No one's judging you for whatever it is you and Brody do when he's not sleeping in his car,” continued the 36-year-old. “We just don't want people to lie about their lives. Maybe you shouldn't have gone on television. It's called a reality show, hon. And the reality is that Brody's been talking about your sex life on his podcast for years.”

He then dragged her flagrant PDA with Cyrus, right after the singer split from her husband, Liam Hemsworth.

“I would love to know Liam Hemsworth's thought on Kaitlynn's recent display of ‘common decency,'” he quipped to the publication. “You know what I call ‘common decency?' Getting it on at your Italian villa and not in front of the paparazzi.”

While Pratt is airing his grievances, Jenner seems just fine. (He’s moved on with Josie Canseco, after all.

“There is far too much negativity being directed at someone who I love and care about very much,” he shared on Instagram. “I feel the need to set the story straight. Kaitlynn and I have been best friends for 6 years, and we continue to be. We, like many others before us and many after us, grew in different directions over those same 6 years.”