Miley Cyrus unfollows Liam Hemsworth on Twitter amid cheating reports

Sexting and unfollowing -- Liam Hemsworth and Miley Cyrus are definitely breaking up in a digital age.

Just days after rumors that Hemsworth, 23, sent racy text messages to "Mad Men" actress January Jones, Cyrus unfollowed him on Twitter Saturday, strengthening speculation that the couple will finally end their four-year relationship. Hemsworth is still following the 20-year-old "Wrecking Ball" singer.

"They're just weeks away from calling it off permanently," a source told Us Weekly. "Liam feels very distant emotionally from Miley these days."

Hemsworth's rep adamantly denied tabloid reports that the "Hunger Games" star started sexting Jones.

"The story of Liam Hemsworth and January Jones is entirely fabricated by US Weekly. There is no truth whatsoever to this tabloid fiction," his rep said Wednesday.

Hemsworth and Jones have been linked since the two were spotted leaving an Oscars party together in February.