Credit: Alberto E. Rodriquez/Getty Images Photo: Dianna Agron and Alex Pettyfer Split?

The sad news that rocked the Glee world this weekend was that Dianna Agron (Quinn) and her live-in boyfriend Alex Pettyfer, who also happens to be her I Am Number Four co-star, split up after dating for nearly a year. There was even talk of an engagement! So, what happened between these two lovebirds?

TMZ reports that Dianna was very upset about a steamy photo shoot that Alex did with a pair of naked models — a photo shoot where he even kissed one of them. But before you go off to throw eggs at Pettyfer’s car, note that the shoot happened a year ago, before Alex and Dianna were even dating!

Do you believe that Dianna would be upset over year-old photos, or do you think this is just spin keep us away from the actual scoop?

No matter the real reason, Dianna appears to be hurting. This morning she tweeted, “Thank you so much for all your love and support. I wouldn't be here without it. And then I don't know where I'd be.”

Source: TMZ