What really made Rob Lowe quit The West Wing?

Karen Hughes isn’t the only heartbreaker in the Beltway these days.

Lowe joinedWingas one of its highest-paid actors, earning about $70,000 per episode.

Rob Lowe

Credit: Rob Lowe Illustration by Robert di Michiell

That figure has held steady while castmateMartin Sheen’s recently negotiated salary is more than four times that amount.

(Their previous earnings?

Roughly $30,000 per episode.)

At the time, Lowe also asked producers for a raise and was told to wait an extra year.

They said, ‘We’re not negotiating."’

(In another Lowe blow, he was missing from the list of nineWing-ers who received Emmy nods.)

But Warnera division of Entertainment Weekly parent AOL Time Warnerhas yet to turn a profit on the show.