Facebook Mastermind Is ... Cheating?

2/5/2008 1:44 PM PST BY TMZ STAFF
Facebook creator Mark Zuckerberg was caught off-guard last night when he was spotted with a lady friend at Mr. Chow.


For some reason, the photog pretended to be a cameraman from the show "Cheaters," and Mark and his SuperPoke! partner quickly quit holding hands. Mark is no cheater though -- the lady he's with is his girlfriend, Priscilla Chan.