Dancing with the Stars Julianne Hough denies cheating on Ryan Seacrest with co-star 10/18/2011 Julianne Hough has denied allegations that she cheated on boyfriend Ryan Seacrest with her Footloose co-star. Read More RELATED NEWS Julianne Hough: I wasn't "open" enough while dating Ryan SeacrestJulianne Hough shares emotional clip after first Broadway showBrooks Laich on dating Julianne Hough: She's cool and sweet, I'm a lucky guy TAGS: American Idol Dancing with the Stars Julianne Hough Ryan Seacrest