Miley Cyrus and Patrick Schwarzenegger's relationship is about to get complicated as their siblings are also reportedly dating each other.

The E! News confirmed that Miley Cyrus' brother, Braison, and Patrick Schwarzenegger's sister, Cristina, are dating and it was the "Wrecking Ball" singer who set them up.

"Braison, 20, and Christina, 23, met for the first time this past November when Miley held her 22nd birthday bash at the Beacher's Madhouse secret location by the Santa Monica Pier," the site said. "Apparently Miley's bro hit it off with Patrick's sister, because according to a source, the two started dating in December."

Braison Cyrus is trying to carve his own career as a singer-songwriter apart from her infamous sister, while Christina Schwarzenegger is a gradudate of Georgetown University.

The website added that the siblings of both Miley Cyrus and Patrick Schwarzenegger have not been keeping their relationship a secret.

"Braison's even Instagrammed a few couple-y pics, including a New Year's Day selfie with Christina (she even has her tongue out like someone else we know)!" it said.

The source also told E! that Miley Cyrus is very happy about Braison and Christina.

Us Weekly also said that Braison and Christina have been dating just after Miley Cyrus and Patrick Schwarzenegger became a couple.

"Both Patrick and Miley approve of the relationship. Miley loves her brother and thinks it's a great match," it said.

Miley Cyrus and Patrick Schwarzenegger started dating in November last year as the budding model apparently had a long-time crush on her. The model's sisters Christina and Katherine are also reportedly her biggest fans.

But Patrick Schwarzenegger's mom Maria Shriver doesn't exactly approve of the relationship, particularly with Miley Cyrus' antics, which led to the friction between mother and son. "Maria told Patrick the more she hears about Miley, the more she's concerned," the source told Us Weekly.