David Arquette and Entertainment Tonight correspondent Christina McLarty have officially called it quits.OK! GALLERY: CHRISTINA MCLARTY & DAVID ARQUETTE HOP ON A SUBWAY IN NYCDavid Tweeted, "Sadly I'm single again. A long distance relationship proved to be too difficult."Considering David lives in L.A. and Christina lives in NYC, it sounds like that was perhaps the main reason for the split. Read More >>