There's trouble in paradise for "Fifty Shades of Grey" star Dakota Johnson. The 21-year-old actress was cast in the film adaption of E.L. James' erotic novel as Anastasia Steele, the shy college student who falls for the kinky, domineering billionaire Christian Grey (played by Jamie Dornan).

It's already been reported that producers will keep the movie as kinky and sexual as the book which seems to be causing a rift between Johnson and her real-life boyfriend Jordan Masterson, Star magazine reports (via Extra). A source told the magazine that Masterson doesn't like all the attention Johnson is getting and is reportedly uncomfortable with the sex scenes she will have to film with Dornan.

"The attention she is getting bugs him," the source said.

It sounds like this report might just be a rumor. From the very beginning Johnson  - and Masterson  - had to have known that being cast as one of the leads in the film would involve nudity and shooting sex scenes. After all, the book's storyline revolves around Christian and Ana's sexual relationship.

Johnson has kept pretty quiet about her personal life and only hinted at having a boyfriend in a October 2012 interview.

"I have a boyfriend that I've been with for a while," she said. "I've only been in long-term relationships. I've never really dated myself."

So who is Jordan Masterson? According to his IMDb page, the 27-year-old actor is best known for his role as Mark in the 2005 movie "The 40-Year-Old Virgin." He also appeared in "The Last Man Standing," "Geek," How I Met Your Mother," "7th Heaven" and CSI: Miami."

According to the Daily Mail, he is also a member of the controversial Church of Scientology and comes from a "high-profile Scientology family." Masterson and his sister, Alanna, are said to have been members of the church since they were children.