Miley Cyrus was all glammed up and bejeweled as she walked the MTV Video Music Awards red carpet on Aug. 25, Sunday, but while the 20-year-old star seemed to flash big smiles for the camera, many were trying to decipher her gesture if she and Liam are finally over.

Though the "always-fighting" couple were last seen on the premiere of Liam Hemsworth's 'Paranoia' on Aug. 8, - where they were reportedly seen not talking or paying attention to each other - it's surprising how Miley managed to walk the red carpet alone without showing any sign if she had called it quits with her fiancé.

The 20-year-old singer simply posed for the paparazzi with her producer "Mike Will Made It" and later performed her controversial summer hit 'We Can't Stop,' that sparked raging reviews from the media after she finally admitted that the rumors about the song's "molly" reference were true.

In an earlier interview, Miley defended her sexy-themed, yet all-groovy hit by saying that the new song, let alone her new image was simply part of her growing up. "I don't think people have a hard time understanding that I've grown up. You can Google me and you know what I'm up to -- you know what that lyric is saying," she said.

Meanwhile, her live performance also ignited some controversy when she danced almost naked with over-sized stuffed bears to the beat of her new song, only to be joined later on by Robin Thicke in their duet of Thicke's 'Blurred Lines.'

The two performers didn't even let the crowd stop them or the network which censored Miley's "molly"-referenced song from going all wild and sexy - Miley privately twerked for the much older singer in her skin-toned two-piece after stripping off her bear-emblazoned leotard.

Although the teen star's performance was a sensation, the crowd and the press couldn't shy away from asking where Liam was or if the two had already ended their almost 4-year relationship.

A source told HollywoodLife.com that Miley is "totally in love with Liam," adding that the couple are suffering from relationship troubles. "They say opposites attract and that's true but it can also work against them," the source says. "Miley is so much more open and out there with everything and Liam is pretty reserved and that's something they fight about a lot."

The source also shared that the "Hannah Montana" actress had quit Twitter to please Liam, and although she did take back her promise later on, she never tweeted about their private life anymore.

"Liam does love her. It's hard to tell if he's madly in love with her because he's not the type of guy that does the big romantic stuff, but he is there for her when she needs him, so that says a lot," the source added. 

So where was Liam, really?