For now, though, word is it's just casual. "They are two adults who are attractive and single," one of sources tells the mag. "But they're not about to run off and make some serious commitment."
Rumors about Jamie and Katie started popping up in 2013 after they were spotted "looking all cozy" while dancing together on stage at an event in East Hampton. [PHOTO] [PHOTO]
In other relationship gossip ... Robert Herjavec and his Dancing with the Stars partner Kym Johnson are this season's rumored cast romance. At least according to Us Weekly. The tab claims the dancing duo has taken their partnership beyond the dance floor.
Another source tells the mag Robert and Kym "were...attracted to each other from the get-go," adding "they are constantly all over each other," and that they have "insane chemistry."
Earlier this month, Herjavec told TMZ he's in the process of splitting with his wife after 25 years of marriage. Johnson was previously engaged but split with her then-fiancee after three years together in the mid-2000s.
DID JUSTIN BIEBER HAVE DAVID ARQUETTE ESCORTED OUT OF HIS BDAY PARTY?!: The "New York Post" says DAVID ARQUETTE showed up at JUSTIN BIEBER'S birthday after-party on Saturday night "pretty messed up."
The Post goes on to claim that David started talking smack about Justin behind his back, so Justin and a friend threw him out -- but David stormed back in, there was a confrontation, and David was eventually booted again.
E! News has a milder account of this story. An "insider" tells them, "Justin wanted David to leave because he wanted to have a private party with his close friends. And while he likes David, he's not part of his inner circle and so he was asked to leave, which he did. There was no altercation."
There's no official word from Justin or David.