May 30, 2014 
JAY Z BELIEVES BEYONCE CHEATS ON HIM WITH HER BODYGUARD.
It looks like Jay Z is jealous of the relationship between Beyonce and Julius De Boer, her bodyguard.
When the video of Solange attacking Jay Z in front of Beyonce in an elevator surfaced, another actor of the scene became famous: Beyoncé’s bodyguard Julius.
In the video, we can clearly see Julius’ sense of professionalism when he protects both Jay Z and Beyoncé from Solange’s attacks. But according to Star Magazine, there is more than a professional relationship between Beyonce and Julius.
“Jay definitely thinks that there was and may still be something romantic going on between Bey and Julius,” an insider tells Star of the hip-hop mogul, whose own rumored cheating was the reported cause of Solange’s attack. “He wanted to fire Julius last February, but Beyonce said, ‘Julius isn’t going anywhere.’”
The “XO” singer and her bodyguard have raised eyebrows for years for their unusually close relationship. In 2009, they were spotted leaving a hotel, his lips stained with the signature’s red lipstick.
Despite being subject to numerous cheating rumors himself, Jay is, nonetheless, “very jealous” of his wife’s friendship with Julius — and friends believe he may have a reason to be.
“They’ve spent a lot of time together behind closed doors,” the source explains. “He’s even stayed in her hotel room.”
LoL!!!!!
Diamond Celebrities 
I doubt that Beyonce seems like a lady maybe Jay z is cheating and just want to accuse his wife for his wrong doing typical men.
I believe they are just friends… Make jay z cool down…
lol, no be small matter oh
Hmmm, another drama lol
And that may be true!