Patrick Schwarzenegger Insists Nothing Inappropriate Went Down on Spring Break—Does Miley Cyrus Believe Him?

Singer enjoys margaritas with her mother as the actor parties with pals in Mexico

Things are going south while Patrick Schwarzenegger is south of the border.

The University of Southern California junior was photographed partying with friends in Cabo San Lucas, Mexico, Sunday. While most spring breakers are nursing hangovers, the reason for Schwarzenegger's headache had more to do with the unwanted paparazzi attention than the body shots he did in the pub.

Schwarzenegger, who is a member of Lamda Chi Alpha fraternity, is on vacation with friends. A bikini-clad Kappa Kappa Gamma sorority sister had her arms around the Grown Ups 2 actor's neck, and at one point, they walked arm-in-arm along the beach. After the photos were first published on The Daily Mail and TMZ, Schwarzenegger denied that any inappropriate happened via a series of tweets, assuring his followers, "Omg. It's one of my best friends girlfriend... Would NEVER do anything against my GF....."

"Girls have guy friends and guys have friends that are girls..." he added.

Schwarzenegger, 21, has not said anything else about the pictures.

His girlfriend Miley Cyrus, meanwhile, seemingly broke her silence Monday by posting an Instagram picture of herself and BFF Cheyne Thomas wearing flesh-colored outfits that featured body hair. "da most biewteous thang in da whole wide world iz friendship," the "Wrecking Ball" singer wrote. "yiew choose dem outta all da billion trillion and beyond dey are da onez dat days seem toooo short with...."

"Yiew wish dey could just go on foreva (that's why sometimes yiew skip da sleepin part) i am layin in da gra$$ lookin up at all da clouds and tryin to even get a lil solaaaa gaze action jusss bein still ... & bein thankful. biewty is all around us and we izzzz so lucky to be on dis planet. (I mean seriously wtf are the chances we all meet da onez we love) Feeling supaaaa blisssssed or maybe I'm juzzzz stone."

After posting that bizarre statement, Cyrus shared another Instagram message: "Surround yourself with people that reflect who you want to be and how you want to feel, energies are contagious." The 22-year-old "We Can't Stop" singer also reposted a SomeEcards message that Dane Cook originally shared, which read: "Don't ever let someone treat you like a yellow Starburst. You are the pink Starburst." She also posted a meme of a girl with 12 hot dogs stuffed into her mouth, writing, "Current mood."

Cyrus might not be with her man in Mexico, but that didn't stop her from behaving as if she were on spring break, too.

In an Instagram caption, she wrote, "Monday margaritaZzzz with my mama."