"I was never with him sexually," she told host Jenny McCarthy.
Thorne confirmed she's still friends with Disick and "very friendly" with Kendall and Kylie Jenner, the younger sisters of Disick's ex-partner Kourtney Kardashian. She said she mainly ignored Disick's portrayal on Keeping Up with the Kardashians while getting to know the reality star.
"I'm very friendly with Kylie and Kendall. Kylie and I used to be very close. As far as I know, they're supes chill. I didn't have any problem with them [about Disick]," the actress said.
"I saw one episode when I first started talking to Scott," she confessed. "Some people were like, 'Oh, you gotta see who he is.' I was like, 'I don't want to. I want to just get to [know him].' It's really unfortunate that there's always somebody that people kind of pick on in shows."
Thorne and Disick sparked dating rumors in late May after they were spotted kissing and cuddling by a pool in Cannes, France. The pair were seen holding hands June 22 in Los Angeles, shortly after Thorne discussed her relationship status.
"I'm single like a Pringle," she said June 13 in an interview with Entertainment Tonight before adding of Disick, "We're chillin', we're friends, we're cool."
Disick split from Kardashian in July 2015 after nine years of dating. He shares three children, 7-year-old son Mason, 5-year-old daughter Penelope and 2-year-old son Reign with the 38-year-old reality star.