Dolly Parton
US Music Artist
When Dolly was a guest on the "Tonight Show" in 2002, Jay Leno asked her if she during all her years of being married to the same man, ever have been tempted by another man she'd met. Dolly said that Burt Reynolds was rather tempting but that actress Lily Tomlin was probably the one who had tempted her the most.
She also has a "best friend" (named Nancy or something similar) who she sleeps in the same bed with every night, including when she's on tour. I believe she wrote about it in her autobiography.