Beyoncé has not been able to avoid controversy regarding her marriage, especially after the elevator fight between her younger sister Solange and husband Jay Z. But even prior to that May event, rumors swirled that the power couple were having marital issues due to hectic schedules and a wandering eye.

Now, a new report suggests that Jay Z is jealous of Beyoncé’s statuesque bodyguard, Julius De Boer. Not much is known about him, but the Dutch native has been working with the 31-year-old singer since 2009, protecting her at various events and during her day-to-day workout regime. He was even on the elevator when Solange went after her brother-in-law. "Jay definitely thinks that there was and may still be something romantic going on between Bey and Julius," a source told Mstarz. "He wanted to fire Julius last February, but Beyoncé said, 'Julius isn't going anywhere.

They've spent a lot of time together behind closed doors," the source continued. "He's even stayed in her hotel room."

This is not the first time Beyoncé and Jay Z have been hit with cheating allegations. Ever since Rita Ora signed with Jay Z’s Roc Nation in 2009, she has been dogged by rumors that she was having an affair with the artist/entrepreneur. Earlier this year, she denied the rumors  during a radio interview  with Power 105.1’s “The Breakfast Club.”

“Don’t you dare disrespect Beyoncé like that ever again in your entire life,” the 23-year-old singer warned. “You should know better than that. … That’s just straight-up disrespect. You can’t even go there.”

Beyoncé and Jay Z are known for having one of the most solid and private relationships in the music industry. They dated for six years before getting married in 2008. But that does not mean the marriage has been without strife.

Last year, tabloids claimed the superstar pair were having marital problems due to distance, as they were both on tour in different parts of the world. "Beyoncé has been feeling like a single mother lately -- and has been letting her husband know he's on shaky ground, and she's using the time they spend apart as a trial separation,” a source told Hollywoodlife.

Shortly after, reports emerged that Jay Z was enjoying his time with other women while Beyoncé was on the road. Claudia Scheelen, a beauty queen, spoke to the Mirror about an encounter she says she had with the rapper in Belgium after one of his concerts. “I was with my girlfriends, and he sent over a drink to us – he had this huge bottle of Ace of Spades champagne, it must have been six or 10 liters. He told me, ‘I’ve been all over the entire world, but the girls in Antwerp are the prettiest girls.’ He didn’t mention Beyoncé or Blue once,” she said.

However, Beyoncé and Jay Z have remained silent, never addressing the rumors. Fans are hoping the two will remain a couple, at least long enough to complete their first tour together, “On The Run,” which begins June 25.