Miley Cyrus' 2013 MTV Video Music Awards performance not only cost her some of her musical credibility (seriously, what kind of choreography was that?), but possibly also her fiance -- and the cover of Vogue. Ouch!

Us Weekly reports that Liam Hemsworth was pretty repulsed by the entire display, and it may have been the final nail in the already pretty well-sealed coffin of their relationship. You know, the same relationship that's seen its share of drama from his end, too, including a rumored dalliance with January Jones, as well as each of their families hinting that a wedding probably won't nor shouldn't happen.

Sources say that Hemsworth found the performance "mortifying" and that he's "embarrassed" by Cyrus ... who, while desperate to cling to him before, couldn't really care less now.

The pair reunited on the red carpet for the premiere of Hemsworth's box office bomb 'Paranoia,' but a source said that they "acted like strangers."

Maybe because at this point, they are. "He is over her and wants to make a clean break," the insider said of Hemsworth. "No more back and forth ... They're not even sleeping in the same room."

And it turns out Hemsworth isn't the only thing the pointlessly raunchy performance cost Cyrus. Insiders say that she was slated for a Vogue cover, but that it's been scratched following the bizarre, foam finger-groping fiasco.

A source said, "Anna found the whole thing distasteful. She decided, based on Miley’s performance, to take the cover in a different direction." Read? Anna thought Cyrus wasn't classy enough for her cover. Ouch!

Here's hoping all those tweets she's keeping count of actually count for something, because those are two big voids to fill.

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