Miley Cyrus Unfollows Liam Hemsworth on Twitter; Breakup Imminent?

Miley Cyrus unfollowed her fiance, Liam Hemsworth, on Twitter Saturday, leading to renewed speculation that the couple is on shaky ground at best.

The controversial singer, 20, has had a turbulent relationship with the Australian actor, whom she met on the set of her 2010 movie The Last Song.

He is said to be embarrassed by her recent antics and looking to make a clean break. Might this be a sign that he has done so? Or come a step closer?

Many reports suggest that he was mortified by her Twerking display at the VMAs - and this was before the Miley Cyrus "Wrecking Ball" video came out.

The couple got engaged in May 2012, but decided earlier this year to postpone their wedding, sparking rumors that they split (which they did not).

Despite a long period of strife, it’s believed that they’ve stuck it out to this point, when Miles’ coming-of-age behavior is providing the biggest test of all.

Cyrus was been seen out without her 3.5-carat Neil Lane engagement ring this year, but it was back on her hand when the duo were reunited in July.

Hemsworth was reportedly in Las Vegas on Saturday night for the Floyd Mayweather vs. Canelo Alvarez boxing match, with Miley nowhere in sight.

He is still following his fiancee in Twitter, just not vice versa.

Cyrus has been traveling to build buzz for her upcoming album Bangerz, and the video for "Wrecking Ball," which has racked up more than 90 million views.

In addition to being buck a-- naked, she’s crying a lot in the video - tears many believe are inspired by her crumbling relationship with her man of three years.

It certainly looks like the end is near for this engagement.