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Selena Gomez has a pretty sweet life. The most sought-after guy on the planet is in love with her, she's one of the most famous girls in the world and she's young, rich and gorgeous. So why did she break down in tears onstage?At her show in Buenos Aires, Gomez began to cry during her performance of 'Hit the Lights.' Right as she starts the lyric, "It's the boy you never told 'I like you'," Sel smiles through tears and goes silent. Luckily, the crowd is singing all of the words so loudly that she doesn't have to. She can't even muster her voice to finish the first verse, but she regains her composure in time for the chorus.

Gomez has had a whirlwind, rollercoaster year. She recently said goodbye to the Disney series that put her on the map, 'Wizards of Waverly Place' and is taking time off from her band after her tour to focus on making more mature films. In addition, her mother suffered a miscarriage at the end of 2011 and she's bombarded by cameras anytime she and boyfriend Justin Bieber leave the house. She also has to balance producing, charity work, fragrances and a clothing line. Phew! We can see how it can get overwhelming!

It appears that Gomez, clad in a blue dress that matches her newly streaked hair, is more likely awestruck by the love and support of her South American fans than she is depressed. Why do we think so? When she recovers, she's smiling. Jelena fans, you can breathe a sigh of relief!

Watch Selena Gomez Cry During 'Hit the Lights' in Buenos Aires