'Big Brother 23' Stars Announce They Are Dating, Totally Surprising Fans

Big Brother Season 23 stars Derek Xiao and Claire Rehfuss are dating after meeting during the season. The two said they recognized a connection when they met, but they did not really begin dating until after they were evicted. Xiao, 24, is a start-up founder, while Rehfuss, 25, is an AI engineer. They both call New York City home.

"I think that we both really felt the chemistry once we got to jury house and could really connect with each other," Rehfuss told Us Weekly on Thursday. "We would stay up late talking every single night and we just really developed a bond." Xiao said he began wondering why they didn't click when they were in the Big Brother house. They talked every single night for hours. "That's when I started really thinking like, 'Wait a second, why didn't this happen in the house? There's such a strong connection and chemistry between us.' I think that was the beginning of us thinking about what this could be," he told the magazine.

The couple said developing their relationship away from the constant Big Brother feed really helped. Xiao knew from the start that Rehfuss was his type, but he "never let myself explore that beyond just a friendship" while cameras rolled. "For me, despite getting taken out very early on (laughs), I did want to win that game. ... I knew that if I let myself, I would just fall for Claire in the house," he said.

Rehfuss agreed that without cameras, you can really get to know a person. "Once you're off-camera, that's when you really, really get to know who a person is and you can really be vulnerable and you can really be open and really talk about a lot of things from your life," she said, adding that their former Big Brother co-stars have been supportive. Some even realized there was chemistry between the two before they started dating.

"The other houseguests were very aware of what was happening," Rehfuss said. "Me and Alyssa were roommates in jury. She was like my confidante. Everyone else was also helping us try to get around the jury house managers. So everyone in the jury house basically knew what was happening. It wasn't like a dirty little secret in the boathouse or anything. It was very fun."