Although he's already denied cheating on his girlfriend Miley Cyrus, Patrick Schwarzenegger did body shots off a mysterious girl and cozied up to her while on spring break in Cabo this weekend. See all the questionable photos here. Credit: Clasos.com.mx/Splash News Online

It sure wasn't a Party in the U.S.A.! Miley Cyrus' boyfriend Patrick Schwarzenegger went down to Cabo San Lucas, Mexico for spring break, where his sunny getaway turned wild as evidenced in questionable new photos of him cozying up to a mysterious bikini-clad babe.

Maria Shriver and Arnold Schwarzenegger's son, 21, who's currently a student at the University of Southern California, was at the Mango Deck Restaurant & Bar in the popular spring break destination when he was seen getting close to the mystery woman.

In one photo, a shirtless Schwarzenegger wraps his buff arms around the petite brunette, who wears a tiny black bikini and a "Kappa Kappa Gamma" sorority head scarf. The girl looks up affectionately at Schwarzenegger and cradles his neck, while her body is firmly pressed up against his swim trunks.

In other pics, the two are seen walking along the sandy turf of the beach bar — arm in arm — as they venture around the locale, where she affectionately grabs onto his hand in one snap.

The girl also pats down the front pockets of his shorts in a moment that appears to be far too close for comfort, particularly for Schwarzenegger who's been linked to Cyrus since last fall.

Those weren't the only incriminating pictures taken of the Kennedy descendant. Additional candids featured Schwarzenegger doing body shots right off the girl's body, with his lips getting dangerously close to the girl's bikini bottoms at one point.

Shortly after the questionable images hit the web on Monday, Mar. 16, Schwarzenegger slammed them as misleading. "Omg. It's one of my best friends girlfriend..." he claimed to his 150,000-plus followers. In several tweets, the political scion vowed that he would "NEVER do anything against" Cyrus, his girlfriend of five months.

While Cyrus, 22, made no mention of her boyfriend's party-hardy behavior on Monday, the "Wrecking Ball" hitmaker posted photos of herself enjoying a tequila cocktail of her own — with her mom Tish Cyrus. "Monday margaritaZzzz with my mama," the star wrote on Instagram, alongside a photo with margs on the rocks in hand.

Monday margaritaZzzz with my mama ???? @tishcyrus

A photo posted by Miley Cyrus (@mileycyrus) on Mar 16, 2015 at 3:34pm PDT

Hours later, she also posted a funny and cryptic eCard of a woman, waving her finger and saying: "Don't you ever let someone treat you like a yellow Starburst. You are a pink Starburst."