Miley Cyrus is in ''lust'' with Theo Wenner.

The 'Wrecking Ball' singer, who has been linked to music producer Mike WiLL Made It since ending her engagement to Liam Hemsworth last month, is said to be completely smitten by the Rolling Stone magazine heir, 26, and talks to him several times a day.

A source told gossip website RadarOnline.com: ''She's definitely dating him. Miley talks about how hot Theo is and how nice he's been to her. She's definitely in lust with him.''

The 20-year-old star snuck out of a party to celebrate the release of her new album 'Bangerz' in New York last week to meet up with her new beau.

The source said: ''He didn't come to the release party, but she snuck out at one point and went and met him at The Plaza.

''She said she's never met anyone as sweet as Theo.''

Miley appeared on the cover of Rolling Stone last month and Theo, whose father is the magazine's owner and chief editor Jann Wenner, works as a photographer for the publication.

He previously dated actress Liv Tyler, 36, in 2011.