Miley Cyrus Liam Hemsworth Break Up Sparks Cheating Rumors? ‘Wrecking Ball’ Star Rumored To Have Dated Theo Wenner While Engaged To ‘Hunger Games’ Star

Miley Cyrus and Liam Hemsworth break up rumors have intensified after it was speculated that the "Wrecking Ball" star dated new boyfriend Theo Wenner while engaged to the "Hunger Games" star.

Theo Wenner, who formerly dated actress Liv Tyler, began a romantic relationship with Miley Cyrus after he shot her sexy magazine cover photo for Rolling Stone, according to the Huffington Post.

"She's definitely dating him," a source told HollywoodLife.com.

 "Miley talks about how hot Theo is and how nice he's been to her. She's definitely completely in lust with him."

And Liam Hemsworth reportedly ended things with Miley Cyrus in September, leaving many to suspect she might have been romantically linked to Theo Wenner before her break up.

But Miley Cyrus might not be the only one in the past relationship guilty of an affair.

Liam Hemsworth was spotted kissing new girlfriend Eiza Gonzalez a day after he allegedly broke up with Miley Cyrus, leaving many fans wondering if he was loyal to his fiancé throughout their engagement.

Miley Cyrus revealed in an interview on Monday that she is much happier now that she has ended her relationship with Liam Hemsworth, leaving many wondering if she is over her rumored depression.

"This is the best time of my life," Miley told Cosmopolitan for their December 2013 issue, according to HollywoodLife.com

"I'm not going to look back on it and be like, 'I wish I hadn't been dwelling over a breakup,' you know? Because that's not what God wants my life to be about right now."

Last week, the "Wrecking Ball" star posted a photo on Instagram with a caption that mentioned she's "never felt more alone - it feels so scary getting old," giving the impression she fell into a deep depression after the break up.