In an appearance on Access Hollywood Live, Hart spilled on some of her memorable showbiz hookups, from her first on-screen kiss with James Van Der Beek to kissing her current co-star Joey Lawrence, via a Backstreet Boy, Ryan Reynolds and Jerry O'Connell.
Kissing Van Der Beek, who showed up for one episode of Clarissa Explains it All, was "really awkward and really uncomfortable," Hart said. "Just weird."
And her Melissa and Joey co-star, Lawrence, is a "little bit of germaphobe" who is obsessed with Chapstick. "There's not much skin-on-skin contact," she said, but the Chapstick provides a "nice little lube."
Ryan Reynolds played Sabrina's crush in Sabrina the Teenage Witch -- the TV movie -- and shared a steamy night-long makeout session with Hart.
"He gave me this beautiful watch and ran out of my dressing room," she said, of their 1996 encounter. "I chased him down and in the headlight of his car, I stopped him. I just grabbed him and kissed him.
"We just made out all night," she said. "Ryan has grown up nicely."
A kissing session with Backstreet Boy Nick Carter, Hart said, was "just one of those hot moments," but it was Jerry O'Connell who left a lasting memory -- by helping her meet her husband.
"I met Mark [Wilkerson] the same night I made out with Jerry," Hart recalled. "But the next morning, at the [Kentucky] Derby races, Jerry is hitting on someone else and I said, 'Oh, I see how this is going to be.'"
"And then Jerry said to me, 'When we get back to LA are we going to hang out?'" she said. "And I said, 'I don't think so. I think I met the man I'm going to marry.'"
Hart and Wilkerson married in July 2003, and together have three children.