Rihanna increases security over lewd fan mail

And her rumoured boyfriend baseball player Matt Kemp is so worried about the situation that he’s advised the singer to be wary of any mail she receives.

“Matt has asked Rihanna’s team to be extra cautious since she was sent two very steamy letters. Her friends are also concerned about the situation. They spent ages talking about it when they dined at the Spanish Kitchen in West Hollywood last week. They are really worried things with this guy are going to get out of hand,” a source told the publication.