"Number one is my relationship with Liam. That's what I feel the most confident in," Miley Cyrus, 20, told Cosmopolitan shortly before taking a sun-filled vacation in January with 23-year-old fiancé Hemsworth. And despite recent reports the engagement is off, Cyrus Tweeted a denial, telling her followers, "I didn't call off my wedding. Taking a break from social media. #draining."