Dianna Agron and Alex Pettyfer are reportedly engaged, according to a source. The two got together while they were filming I Am Number Four last year, and she was apparently spotted wearing a gold band on her left ring finger during their junket a few weeks ago. Dianna, who stars on Glee and apparently may have a pre-Valentine's Day breakup on the show, has quite the romantic love story to celebrate this Feb. 14. First up, however, is the exciting post-Super Bowl episode featuring Dianna and all her costars as zombies for a Thriller dance number. Alex, on the other hand, is one hot import to watch and gained a few more fans with his recent shirtless appearance on Ellen.