(Cover) - EN Showbiz - Miley Cyrus is reportedly driving fianc Liam Hemsworth "crazy" at the moment.

The 22-year-old Australian actor is currently filming new movie Paranoia in Philadelphia and the former child star has paid him a visit.

But the exuberant starlet is proving too much for the Hollywood hunk as he tries to focus on doing a great job on set.

"Miley is driving Liam crazy at the moment," a source told RadarOnline. "While he's on set she gallivants around town shopping, getting pampered in nail salons and just can't sit still."

"Then when she sees Liam after he's finished filming, she chews his ear off about her adventures and can't wait to tell him what she did that day.

"With the early starts and late finishes, all Liam wants to do is rest, go through his script so he's ready for his role and order a takeout or go for a quiet dinner.

"But Miley wants to go to the local gay bars and hit up fancy restaurants, which Liam just isn't in the mood for.

"So Liam's told Miley that he's in Philadelphia to work and can't focus with her buzzing around him. He even suggested perhaps it was time for her to go back home." (C) Cover Media