Miley Cyrus's brother dating her beau's sister?

Singer Miley Cyrus's younger brother is reportedly dating her boyfriend Patrick Schwarzenegger's older sister.

According to a source, Braison Cyrus, 20, started dating Christina Schwarzenegger, 23, in December 2014, just a month after Miley and Patrick started their romantic liaison, reports tmz.com.

If eventually both couples get married, Braison will be Miley's brother-in-law and brother, while Christina will be Patrick's sister-in-law and sister!