Zac Efron & Vanessa Hudgens have split up!?! Sources close to the High School Musical co-stars tell OK magazine that  Efron & Hudgens have officially gone their separate ways.

According to the source, while Zac was away in Europe promoting Hairspray, Vanessa was at a Hollywood Hills party, where eyewitnesses say she was “all over” her older, not-Zac date. And when someone dared to ask about Zac, Vanessa “threw a fit and said ‘don’t mention his name!’ “ 

After Efron’s return home to L.A., the pair were spotted Sunday night driving together in Zac’s car, though the mood looked anything but festive. 

A rep for Hudgens says the story is not true.

If they are really busted, my question would be did they break up because of indifferences or for a specific reason namely Vanessa Hudgens’ nude photo circulating all over the internet or was Hudgens really cheating on Efron? Bad kitten!  I don’t think Hudgens is hot anyway, she’s cute but most of them are cute at 18, aren’t they? Ok ok.. I am superficial that’s why this is a celebrity gossip site! Welcome to Hollywood!