The summer of discontent continues to simmer between Live! co-hosts Regis Philbin and Kelly Ripa.

A Reege wisecrack on their July 18 show cut Kelly to the bone, insiders said. The pair were interviewing Dancing With The Stars winner Kelly Monaco, who said her relationship with dance partner Alec Mazo was strictly professional.

Kelly commented: “That’s the same reason that nothing goes on between me and Regis. We’ve got a professional relationship.”

Regis then shot back: “We hate each other, that’s why!”

An insider said the latest snipe-fest left Kelly muttering to a show staffer: “I don’t know how I’m going to get through another four years of this!” The incident comes after a string of catty exchanges between the pair earlier this summer.

Last week The National Enquirer reported that a damning dossier is being drawn up so TV bosses can carry out their plans to dump 73-year-old Regis.

Show producer Buena Vista Television denies planting a mole on set to track Regis’ mistakes. But sources said Regis could be replaced by the end of the year.

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