'Vanderpump Rules' SURver Scuffle: Stassi Goes Ballistic on Boyfriend Beau at Her 30th Birthday Party

Stassi Schroeder has been known to cause chaos at her birthday parties, but this year, she was determined to show that turning 30 came with a total attitude change.

And while we give the girl an A for effort, she did wind up going ballistic on her boyfriend, Beau Clark, for seemingly no reason.

Monday's "Vanderpump Rules" documented Stassi's joint birthday party with Ariana Madix (they have come a long way, and Scheana isn't thrilled). The theme was winter wonderland meets ice princess meets "Game of Thrones." They pulled it off! The house, the decorations, the costumes -- it was all epic.

It's also important to note this is the first healthy relationship Stassi's been in since -- well-- since we've known her. She went from Jax Taylor to Patrick Meagher, with a few not-so-pleasant dudes in between. Beau's definitely "the one." We can feel it.

But after all, Stassi is still Stassi, and after way too many shots, she decided she was done with the festivities and went upstairs to get ready for bed. The party was still going on downstairs, and Beau was still having a good time, but the birthday girl wanted him to be with her. It all started off kinda sweet -- like she just wanted him by her side -- but it quickly turned into a scary temper-tantrum.

Stassi texted Beau three times. No response. She called him three times between 1:57 a.m. and 2 a.m. "F--k this," she said to herself, deciding to leave a voicemail.

"I've been texting you, and I know that you've read them," she said sternly. In a second voicemail at 2:03, Stassi went off. "You have legitimately been ignoring me!" she shouted. In a third voicemail, she exclaimed, "This is bullshit!" She tried Beau one more time, but it went to voicemail, so she punted her phone to the ground and shattered its screen. Stassi stormed out of the bathroom cursing and in tears.

Happy Birthday!

"Vanderpump Rules" airs Mondays at 9 p.m. on Bravo.

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