Did Patrick Schwarzenegger cheat on girlfriend Miley Cyrus? Well, that seems to be the question in everyone's mind after photos of him circulated while cozying up with a mystery girl in Cabo San Lucas, Mexico.

Oh no! Patrick Schwarzenegger and Miley Cyrus heading for splitsville?! According to Hollywood Life, Cyrus might have been upset after she learned that her 21-year-old boyfriend got intimate with another girl during a University of Southern California (USC) spring break party at the Mango Deck Restaurant and Bar in Cabo. It was also revealed that Patrick was even seen doing body shots off bikini-clad girls in some of the photos.

The cheating rumors actually started when Schwarzenegger was seen with a mystery brunette, who was obviously not his 22-year-old girlfriend Miley Cyrus. The Daily Mail revealed Patrick and his alleged date were spotted sharing an intimate embrace, dancing around together and walking hand-in-hand.

The bikini-clad mystery woman in question seemed to be Patrick Schwarzenegger's friend with the Kappa Kappa Gamma sorority, E! Online revealed. However, the word "friend" is quite an inappropriate label to the mystery woman seen in the controversial photos. TMZ pointed out that friends don't usually do body shots off one another.

Meanwhile, Patrick Schwarzenegger promptly denied the cheating controversy. In a Twitter message posted on Monday afternoon, The New York Daily News reported that Miley Cyrus' beau of five months attempted to set the record straight about his Mexican tryst while enjoying the USC spring break.

"Omg. It's one of my best friend's girlfriend..." he initially tweeted before adding, "Would NEVER do anything against my GF... Girls have guy friends and guys have friends that are girls..."

Miley Cyrus, on the other hand, has been mum about the cheating issue her boyfriend is currently facing. However, a source exclusively told Hollywood Life that the "Wrecking Ball" singer was completely pissed and felt that Patrick "disrespected and their relationship" because of his flirty behavior in Cabo.

Though Miley Cyrus hasn't directly addressed the controversy, US Weekly shared the "We Can't Stop" hitmaker made no mention of Patrick Schwarzenegger's Cabo San Lucas rendezvous on her Instagram account on Monday. Instead, she posted a photo with her mom while they're sipping margaritas. Cyrus also shared a cryptic Instagram message.

"Don't you ever let someone treat you like a yellow Starburst. You are a pink Starburst," her eCard reads.

The cheating issues came after Patrick Schwarzenegger and Miley Cyrus had dinner with Maria Shriver last Wednesday night, TMZ cited. So, do you think they're breaking up?