Well, the inevitable has finally happened--Liam Hemsworth and Miley Cyrus have gone to Splitsville for good.

We can't say we're entirely surprised though. Weeks before the inevitable breakup, countless rumors of the ex-couple have been wreaking havoc on the Internet. Adding fuel to the fire is Miley's recent rendezvous at a house party in LA without her 23-carat engagement ring.

It has been a tough week for the Last Song stars, with confusing reports over the status of their relationship not really helping in patching up issues that needed-well--patching up.

These supposedly included the former couple's careers, Cyrus' partying, and Hemsworth's womanizing.

Liam's rep told Page Six, "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."

However, one should not blame all this on Miley because other sources reveal that Liam is the real culprit.

Liam allegedly made out with Mad Men actress January Jones and aggressively flirted with Perks of Being a Wallflower star Emma Watson during the Oscar weekend.

According to Us Weekly, 23-year-old Liam got a little flirty with Emma at a house party in Brentwood, California, and by 'a little,' we really mean a lot.

"If you had no idea, watching them together, watching him flirt with her, as his face would get closer and closer, and he seemed to find a reason to touch her somewhere, shoulder, hand, knee, as often as possible, you would never think there was a fiancée, and if there was, you wouldn't want to be in that position," a source claimed.

The January Jones hookup also seemed to be a lot more heated than what everybody thought it was. An eyewitness explained, "They went to a private house party, and right in the middle of the party, January was clinging to Liam, saying, 'You're so handsome. He kept saying, 'We can't do this here.' Then they left holding hands and went out in the hallway and were making out. She was wasted. It wasn't good."

It looks like Liam needs a whole lot of explaining to clear this up, but the hunky actor remains tight-lipped on the issues.