Signing autographs for country music fans at the Nashville Convention Center on June 14, LeAnn Rimes looked as if there was nowhere she’d rather be. “She looked really pretty, and she was smiling a lot,” says fan Miranda Montgomery, who was at the convention center for the CMA Music Festival. But 20 miles away at their home in Franklin, Tenn., LeAnn’s husband, dancer Dean Sheremet, was not in a good mood at all. According to an insider close to the couple, LeAnn, 26, has told him that she is ready to file for divorce — and that she’s leaving him in the hopes of being with her married TV movie co-star Eddie Cibrian. “He is completely distraught and heartbroken,” says an insider.

For more on all the latest celebrity news, check out this week’s issue of In Touch, on newsstands now!