"I would never be able to go on a dating site ever," the actress told The Guardian's G2. "I would just be expecting a murderer and a psychotic rapist."
Regardless of who she dates, Kate is not necessary looking for a support system. She already has that.
"My oldest friends are from school and I don't know if I will have a relationship that will last as long as that," she said.
Kate hasn't publicly dated anyone since splitting with producer Len Wiseman last year. Throughout her marriage, she remained close with her ex-husband Michael Sheen, whom she shares a 17-year-old daughter with named Lily. Kate is also close with Michael's girlfriend Sarah Silverman.
In speaking to Chelsea Handler recently, Michael spoke about his ex-wife glowingly.
"Our relationship now is probably better than it ever was. And it helps that she actually likes Sarah more than she likes me," he quipped.
Sarah told Chelsea, "He and Kate are like brother and sister. I love her, she's hilarious. She's really, really cool."
Kate, for her part, is baffled that people think her family situation is unique.
"I don't know why everyone was so surprised," she told Stylist magazine. "Sarah's such a fantastic woman, I love her, and Michael and I have gotten on for years now. I've known him since I was 22, we're basically family. The thing that surprised me was what a big deal everybody made about us all getting on..."
On Thursday, Kate and Michael were together again when Lily got accepted into college.
Kate shared two side-by-side Instagram images of the moment -- one of Michael picking Lily up and the other of the two parents hugging.
Kate said, "The appropriate fatherly response when you found out your girl got into college: burst into tears drop everything rush over and pick up everyone even remotely involved."