Rumors have been circulating about Liam cheating with January Jones, Miley not wearing her engagement ring in public and Liam jetting off to Australia after the fight.

Sure, Miley and Liam have fought before... broken up and gotten back together. One source said that Miley and Liam have issues but are working past them and Miley is still excited about getting married to Liam. BUT another, more recent snitch has said "Miley and Liam are done. It's over. She likes to party really hard and can be pretty wild. It became a problem for him."

So is it Miley's fault or Liam's? Or are they both wild... mutual cheaters?

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Speaking of Liam, have you VOTED for him in our March Manness bracket? He's going head to head against Twilight's Taylor Lautner in a battle of the sexy and it's a pretty close race! Who is hotter? Click to vote.