Taylor Swift celebrated her 25th birthday party and it wouldn't be complete without a breakdown from a guest.

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Us Weekly reported on Wednesday that Selena Gomez "cried and threw a fit" at Swift's 25th birthday bash last Friday.

While any party isn't complete without some relationship drama, this drama may have surrounded a popular Hollywood couple-- Gomez and her ex Justin Bieber.

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The two haven't been photographed together since September and have reportedly been trying to make each other jealous in the last few months.

Is this Gomez's way of finally speaking out about the relationship?

While guests like Beyonce and Jay Z enjoyed "beers, pizza, and sushi and mingled with pals like Justin Timberlake," Gomez, who has reportedly dated Bieber on and off for a while, was reportedly getting emotional over her ex-boyfriend.

"She shouted, 'No one understands me! My boyfriend doesn't even understand me,'" an insider said. The source then added that bystanders, one of them including guest Sam Smith "just stared [at her]."

The rest of the party was apparently having a "total blast," according to another source.

While Swift was busy performing on stage, a source said there was a booze delivery to her swank NYC home for the big party, including Blue Moon and Stella beers.

Tags: Selena Gomez Justin Bieber Taylor Swift