Well, now we know why Miley Cyrus turned down Matt Peterson's prom invite.
She has her sights set on another man!
According to the latest issue of Life & Style, Miley hit a "new low" recently when she made an active play for Christian rocker Sam Hancock, the boyfriend of Miley's sister, Brandi.
“She was trying to hook up with him and date him,” a friend of the family supposedly tells the tabloid. “She was basically trying to steal her sister’s boyfriend, or at least cheat with him.”