Miley Cyrus had hung out with the girl her boyfriend Patrick Schwarzenegger was getting cozy with over spring break.
The girl, who was identified as Natalie by TMZ, attended a University of Southern California (USC) football game in November with Cyrus and Schwarzenegger.
This is the same game where it was confirmed that Cyrus and Schwarzenegger were dating.
Despite the closeness of Schwarzenegger and Natalie during spring break in Cabo San Lucas, Mexico, Schwarzenegger claimed on Twitter that he isn't cheating and Natalie is one of his friend's girlfriends.
"Omg it's one of my best friends girlfriend," he tweeted Monday. "Would NEVER do anything against my GF... Girls have guy friends and guys have friends that are girls..."
It's unclear how Cyrus felt about the pictures of her boyfriend hugging and locking arms with Natalie.
On Monday, the same day as Schwarzenegger's Twitter defense, Cyrus posted a picture drinking a margarita with her mom.