Miley Cyrus' boyfriend was allegedly caught cheating, and it seems that the "Wrecking Ball" singer might even know the girl who was photographed flirting with Patrick Schwarzenegger during a spring break beach trip.

According to a report from Hollywood Life, the bikini-clad brunette seen with Miley Cyrus' boyfriend last March 15 was also spotted on photos of the singer taken in November last year.

The still unnamed female appears to be the same girl standing beside Miley Cyrus while on a USC football game last Holiday season at the Los Angeles Memorial Coliseum.

According to a report from In Touch Weekly, the former Disney star has always been wary of the girl.

"Miley had never trusted this chick," an insider revealed.

"She's furious right now and isn't listening to his excuses. Patrick may have blown this."

"Miley was so angry when she saw the pictures, especially when she realized that the girl is someone she knows and has hung out with," the insider added.

Prior to the release of the photos showing Miley Cyrus' boyfriend looking cozy with another girl, a recent report from In Touch even said that she and Patrick Schwarzenegger are allegedly set to get married.

"Miley is telling everyone she's found The One," a source revealed.

"He's totally under her spell. They're as good as engaged."

Aside from engagement rumors, Miley Cyrus and her boyfriend have long been hounded with allegations that they are pregnant.

According to a recent report from Hollywood Life, the controversial singer-actress poked fun at the issue by posting an ultrasound photo on Instagram.

Miley Cyrus' Instagram post last March 4 showed a cut-out image of her getting an ultrasound while her assistant, Cheyne Thomas, played the doctor.

The baby shown in the ultrasound was made of pizza, slamming rumors that she is expecting a child with the son of movie star Arnold Schwarzenegger and Maria Shriver.

"The rumors are true...... @cheythom," Miley Cyrus wrote alongside her sarcastic Instagram post.