'The Ultimatum' stars Rae and Jake deny having sex on the show and say they had 'a strict rule as far as physical things went'

• Rae Williams and Jake Cunningham were trial spouses on the Netflix dating show "The Ultimatum."

• The two kissed passionately in several scenes before reuniting with their original partners.

Rae Williams and Jake Cunningham said they did not have sex while filming "The Ultimatum." The trial spouses from the Netflix dating show told Us Weekly that they adhered to "a strict rule as far as physical things went."

"I kissed him a lot. I was the one who initiated kissing with him, but we didn't take it past kissing. And that was really important to both of us," said Rae.

"The Ultimatum" features six couples where one partner is prepared to get married and the other is not quite ready to commit. The participants pick a new partner from one of the other couples to experience a "trial marriage" with. They move in together and date for three weeks to see if there is a "connection."

At the end of the first part of the experiment, they reunite with their original partner for another three-week "trial marriage." Afterwards, they ultimately decide if they are better off with their original partner, in a different relationship with their trial partner, or single.

Rae came onto the show with her boyfriend Zay Wilson, and Jake came onto the show with his girlfriend April Melohn. The two connected immediately and viewers watched them get closer over the course of the season as they lived together for their three-week trial marriage.

"No matter how it looks, we did not have sex," Jake told Us Weekly. "The only thing we did was kiss. I slept in a separate bed for the first five days on the show."

Jake said he and Rae were 'very respectful' on 'The Ultimatum'

Jake also said that he was reluctant to go on the show and tried to stay "respectful" to his original partner, April. "I didn't wanna do the show," he told Us Weekly. "She's the one that wanted to experiment around and see all this. So honestly me and Rae were very respectful doing the whole situation."

"April was doing a lot more than I was," he alleged. "So at that time, I felt OK about what I was doing."

At one point on the show, Jake confronted April about texting other men. "April's been texting a lot of guys that she found out partying at the club. I've seen her with all these other dudes on Instagram as well. I know that she knows that would upset me," he said in a confessional on that episode.

Rae, meanwhile, told Us Weekly that she felt "guilt" for connecting with Jake emotionally while dating her original partner, Zay.

"I'd be like, 'Oh, I'm so happy right now. I love hanging out with this guy. I can't wait to go home and cook dinner with him and watch a movie and do whatever.' And then I was like, 'I should not feel like this.'" she said.

The first eight episodes of "The Ultimatum" are now streaming on Netflix. Episodes nine and 10 will be available on Wednesday, April 13.