Alex Pettyfer and'Glee's'Dianna Agron break up? Report says'I Am Number Four'co-stars split

What a difference two weeks make.

"I Am Number Four"co-starsAlex PettyferandDianna Agronhave broken up,In Touch Weekly is reporting, just fifteen days after Hollywood's hottest young couple was denying reports that they were engaged.

Agron, the 24-year-old star ofFox's hit comedy"Glee,"told a friend that her relationship with Pettyfer, 20, is"definitely off - and so is the engagement,"an insider told the gossip magazine.

The couple was reportedly introduced last year by"I Am Number Four"directorD.J. Caruso, just before filming started last year.

The pair caused a stir two weeks ago during a press event for"I Am Number Four,"when Agron was spotted with a"thin diamond band on her left ring finger,"according toPeople.com.

The uproar over the ring sighting caused a flurry of denials from both stars' publicists.

"Opinions, opinions, opinions...and all of those 'inside sources,'"Agron wrote on her blog in the aftermath of the engagement rumors."If you believe to have the facts, show your face and then say what you indeed know to be true!"

And that wasbeforethe latest report.

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