The "We Can't Stop" singer was recently spotted making out with the rocker, whose twin brother is married to Nicole Richie.
On Halloween, Miley and Benji reportedly shared a kiss at West Hollywood hot spot Bootsy Bellows.
According to several reports, the PDA all went down at Adam Lambert's Halloween gig, when Miley, who was wearing her epic Lil' Kim costume, and Benji instantly hit it off after they were introduced to each other. They hit it off so much, they left with each other!
"The hookup 100% happened as they met each other that night, so the sparks flew instantly and they for sure went home together, so draw your own conclusions from that," a source told Hollywoodlife.com.
As we all know, Miley's been playing the field since her big split from Liam Hemsworth a few months ago. She was reportedly flirting it up with Rolling Stone photographer Theo Wenner and music producer Mike Will Made It. Could Benji be her new guy?
"The way that they were together I would imagine there is some life to this, but only time will tell. Miley is having fun and not looking into another relationship. Plus, Benji is kind of a player," the same source continued.
Could you see Miley's new man being Benji from Good Charlotte? What do you think about their reported hook up? Chime in!