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Now that LeAnn Rimes and Eddie Cibrian are involved in a full-on relationship, their exes, Brandi Glanville and Dean Sheremet, have developed an unlikely friendship with one another.

A source close to LeAnn’s soon-to-be former hubby, Dean Sheremet, tells Us Weekly, “They’re the ones who understand what the other is feeling.” The twosome first met when visiting their respective spouses on the set of their now infamous Lifetime movie, Northern Light.

Adds another snitch, “They’ve put the pieces together about the last few months, and they’re developing a good friendship through this.” Well isn’t that just a Lifetime movie of its own?

Gallery Info: LeAnn Rimes lunches in Brentwood, California.