Selena Gomez guests on "Jimmy Kimmel Live" and she gushed about her celebrity crushes. Sorry to disappoint the Jelena fans, but Justin Bieber is not on the singer's list.

The 21-year-old singer/actress has revealed on Wednesday that she had a crush on her co-star in the movie "Rudderless". So who is he? None other than Billy Crudup! Selena said that she fell in-love with the 46-year-old actor after she watched him in the movie "Almost Famous" where he played the role of a guitarist named Russell Hammond.

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Selena noted that she was so into him that she was like Penny Lane for a month. She wore the outfits, the hair, and the sunglasses. However, she found out she was going to be in the movie with him and it took her a minute to consider it because it would feel awkward since she had the hots for him.

Sel and Billy starred in the "Rudderless" film as people who grieved the death of Billy's son in the movie. Sel was the girlfriend of Billy's son and they both grieved for the untimely loss of the person they both loved.

Kimmel joked, "And the crush is over now that you've gotten to know him?" Selena was taken aback but got her composure saying, "What are you saying? He's a great guy!"

So who else is on the list of Selena? First is Shia LaBeouf, who she met backstage back in 2011. Next is Jesse McCartney, who she had a crush on during her teenage years as she gushed about him during a July interview this year.

Another is actor Logan Lermana whom she openly admitted as her celebrity crush back in 2010 while being interviewed in a radio show. And just last year, Selena said that she had a crush on George Clooney and lastly, she has named Ryan Gosling. 

To watch how she gushed about Billy, click here: https://www.youtube.com/watch?v=AtDHW1isCVU.