Miley Cyrus and her hot new boyfriend, Patrick Schwarzenegger went out and about last November 23 at The Factory Room in West Hollywood to celebrate Cyrus’ 22^nd birthday. The wild party had lots of drinking and a penis-shaped mechanical bull, which may have been the reason why Maria Shriver, Schwarzenegger’s mom, is concerned about his son’s newest flame.

After seeing the photos from that night’s debauchery, sources tell Hollywood Life that the relationship is “eating [Maria Shriver] up inside.”  “It is beyond true that Maria Shriver disapproves of the relationship that Patrick is starting with Miley.” the source added.

Miley Cyrus’ new boyfriend’s mother was “disgusted” by her birthday celebrations. http://t.co/REeHktMWMi pic.twitter.com/10bhisoVrF

— xinmsn.com (English) (@xinmsn_en) November 28, 2014

.@MileyCyrus danced topless, rode a penis-shaped bucking bronco. What did YOU do this weekend? http://t.co/9VtzXWVx7I pic.twitter.com/Q0IS2E9XGv

— Canoe (@Canoe) November 24, 2014

Cyrus has been working hard to fit in with the Hollywood political family, but her wild party photos may have been the final straw for Shriver and her family. Shriver is afraid that his son might be influenced by Cyrus’ wild ways. “She fully believes that you become who you surround yourself with and she’s always been so happy with the friends Patrick chooses, she never saw this coming,” the source claims.

Shriver is also getting the support from family members about this decision, but husband Arnold Schwarzenegger just wants his son to be happy with whatever he gets into. Miley is miles away from the squeaky clean image that the Schwarzenegger family has been maintaining since Arnold became the mayor of California in 2003.

Schwarzenegger has been harboring strong feelings towards Cyrus, his biggest celebrity crush. They first met in 2011 after Cyrus ended her relationship with actor Liam Hemsworth, but it wasn’t until this year that she and Schwarzenegger started going out. The Wrecking Ball singer first thought that Schwarzenegger was too young, but he has definitely grown a lot since their first encounter.

The couple was spotted last Halloween at the Roosevelt Hotel before hitting up Cyrus’ place to spend the night.