According to the latest rumours, Rimes is having an affair with her co-star, Eddie Cibrian, reports UsMagazine.com.
Rimes, 26, is married to dancer Dean Sheremet, but it seems that she’s become very close to Cibrian on the set of Northern Lights.
Before rumours of an affair began, director Mike Robe noticed, "From the moment we rehearsed, LeAnn and Eddie honestly developed a really strong bond and a warm relationship."
Rimes and Sheremet have been married for seven years, since Rimes was 19.