The Summer House cast might be giving the cast of Vanderpump Rules a run for their money when it comes to costar hookups.

During the Thursday, February 4, premiere, fans met Ciara Miller, who has a past with Luke Gulbranson. Ciara’s addition comes as a surprise to Hannah Berner, who hooked up with Luke during season 4.

“I was feeling so many emotions [when Ciara showed up] because I knew I was locked in a house for the next six weeks,” the comedian, 29, exclusively told Us Weekly. “I wasn’t mentally prepared for it, especially ‘cause he wasn’t giving me those kinds of signals up until that point.”

While Hannah concluded that her relationship with Luke, 36, was “a summer romance that got a little more complicated” than she wanted, he denied that their relationship was more than a fling.

“Hannah and I were friends [after season 4]. … We were very close friends, and we share a lot of things with each other. We talk a lot,” he told Us. “Maybe she thought it was something else, but I was under the impression that Hannah actually was seeing somebody and had been seeing people. And I was just treating her like a friend like I always had.”