PHILTONSTAVROS022407_01.jpgParis Hilton PHILTON022407_01.jpgJust what is going on with Paris Hilton and Stavros Niarchos' relationship? They may have been dating since the Stone Age, but it seems like we catch them fighting as often as we catch Nicole Richie at Nozawa! Last weekend, for instance, the power pair looked happy enough together - we caught them enjoying each others' company a couple of times, and readers with long memories will of course remember Paris debuting her "TAKEN" necklace. But then at Andrew Whitesall's Oscar afterparty, as you now know, the couple was practically ready to throw down! Could this have had anything to do with the blonde with whom we caught Stavros flirting? Or was this just another one of their sudden squalls?