Johnny Depp's girlfriend Amber Heard is reportedly interested in taking on the role of Anastasia Steele for the upcoming film adaptation of E.L. James' novel series "Fifty Shades of Grey."

However, according to Celebitchy, her boyfriend has been trying to talk her out of it. The celebrity gossip site reported that the "Pirates of the Caribbean" actor thinks the movie is going to be "too smutty" for Heard to appear in.

A source said, "Apparently, she was offered the lead in the film version of the raunchy book 50 Shades of Grey," but Depp was not supporting of the role.

Gather reported that the "Paranoia" actress did not put up much of a fight seeing as she has been "looking to become more of an action standout anyway." But that doesn't mean she hasn't been giving her boyfriend slack about being boring.

According to the National Enquirer, Johnny Depp's and Amber Heard's romance is heading for a break up as their relationship is not living up to the standards of what the 27-year old starlet expected.

The actress is reportedly beginning to resent her 50-year-old boyfriend. A source revealed, "When they first started dating, he promised to help her become the next Angelina Jolie, but Johnny simply hasn't followed through.

"Instead of finding exciting projects for Amber, or introducing her to TinselTown movers and shakers, he seems to block her from moving forward in her career."

The couple met on the set of their film "The Rum Diary" and have been together since Depp dumped girlfriend of 14 years Vanessa Paradis in June 2012 and Heard ended things with girlfriend Tasya van Ree.

"It was cute for a while," the source said, "Amber liked cooking for Johnny and watching old movies with him. But now she's bored out of her mind."

The couple's relationship reportedly began to hit a bump during their trip to Japan while Deep was promoting his box-office disappointment "The Lone Ranger."

An insider told the tabloid, "The whole trip was a disaster, and Johnny and Amber got into a huge fight on the flight home."

"She pointed out how much she's given up to be with him and admitted that she misses her old life. Johnny's been super stressed about the movie and just snapped, telling Amber that she was lucky to be dating him."

However, the actor is trying to salvage his relationship with the hot actress with the source alleging that "He promised Amber he'll make things more exciting for her, and he's still dangling the carrot of introducing her to agents and other key players."

The insider added, "Amber's sticking around, hoping Johnny will be true to his word. But she's not going to wait much longer."

What are your thoughts on Amber Heard's and Johnny Depp's relationship? Leave us a comment below.