Cibrian cheated on Glanville with then-married Rimes while filming a TV movie with the country singer in 2009, and The Real Housewives of Beverly Hills star admits she felt so betrayed, she let the air out of his tires in retaliation.
However, filled with regret and fear her actions would have dire consequences, the 39 year old gave Cibrian fair warning.
During a Real Housewives reunion show, which aired in America on Monday (06Feb12), she said, "I just took the tires and I put the knife into his motorcycles. Then I told him, 'Don't ride them, because you're probably going to get hurt.'"
The former couple has two children - Mason, eight, and Jake, four.