The couple is allegedly holding off wedding plans due to major relationship issues, Celebrity Dirty Laundry reported.

The engaged couple is allegedly having problems in their relationship in the midst of planning their wedding. An insider revealed to E Online that the two are constantly having issues due to attitude differences.

The source described the pair as extreme and intense individuals. Arguments may start from the distinctions of their personalities.

The 28-year-old actress is reportedly spending less time with the A list actor.  "Amber flirts and has many different kinds of relationships. She is not really ready to settle down, "the source revealed, according to People.

A few weeks ago, the actress has been the topic of cheating rumors with "Magic Mike 2" co-star Channing Tatum. Reports said that the two were seen flirting with each other despite being committed to their individual partners. "They were noticeably flirty" and "everybody saw it," sources said, Hollywood Life reported.

On the other hand, the 51-year-old actor is presumably head over heels with Heard. "Johnny is crazy in love with Amber, but there is turmoil in the relationship," Depp's friend said.

"Johnny wants to make it work but may hold off on marriage for now. While he is crazy about her, she is a real challenge for him," the source added, according to International Business Times.

The couple met each other at the film "Rum Diary" in 2011. In June 2012, Depp and his partner for 14 years Vanessa Paradis announced their break up. Depp and Paradis have divided custody of their two children.

Last January, Heard was spotted wearing a diamond ring and the engagement was confirmed. The couple was reportedly planning to wed in the summer of 2015.

As of this time, the couple has not commented personally on the break up rumors.