Is there trouble in reality TV paradise already?
Despite claiming to be "bursting with excitement" over their future wedding vows, the sexy 27-year-old brunette has already set her sights on another guy!
Constantly left in the wings while Sean was on Dancing On With The Stars, it hasn't gotten any easier since he was voted off thanks to his busy schedule making TV appearances – so Catherine has been distracting herself with one of the show's pros, Julz Tocker, pals told the magazine.
While at a party at the Palazzo apartment complex in Los Angeles in early May, Sean, 29, was the last thing on her mind as his bride-to-be instead snuggled up with the Season 16 dancer.
"She was rubbing Julz's arm, whispering in his ear and giggling," revealed the insider.
For the full story, pick up the new issue of Star magazine on newsstands Thursday.