[artist id="3187077"]Justin Bieber[/artist] has not been shy about his desire to [article id="1635325"]make reality star Kim Kardashian his girlfriend[/article]. So, when the two met up at the White House Correspondents' dinner in Washington, D.C., over the weekend, he made sure to get a picture with her. He later posted the picture on his Twitter page and called her his "girlfriend."

Some Bieber fans, however, weren't at all pleased with the situation and let Kardashian know as much. On Tuesday, the reality star tweeted, "Seriously Biebs! @JustinBieber I'm getting death threats from your fans! This is unBeliebable!!!" Bieber responded with a tweet to his fans saying, "Ladies calm down. @kimkardashian is a friend. a very sexy friend but a friend. no need 4 threats. Let's all be friends and hang out often."

Just days before, Kardashian tweeted that she is the latest person to catch Bieber Fever, writing, "I officially have Bieber Fever!!! ... Best time in DC. Heading home soon!"

It seems Bieber had an equally good time chilling with her, even if the whole Kardashian encounter left his fans with a bad taste in their mouths. "Obama had jokes!!! Met some really great people and sat with Queen Latifah. She is an awesome person," he wrote. "The dinner tonight with the president was fun. I'm super jet legged ... Great night in DC ... but this jet lag from the last 2 weeks of travel is bad. sleepy but trying to watch this fight. Money is on Mayweather."

Bieber's fans have earned a reputation for being incredibly loyal. In fact, several appearances over the last several months were canceled due to their over-enthusiasm for the pop star. Late last month, an [article id="1637748"]appearance in Australia was canceled[/article] after a crowd stampede. And prior to that, [article id="1632410"]fans in Paris[/article] and [article id="1626822"]Long Island[/article] got so out of hand that appearances there also had to be canceled.

What do you think of Bieber Fever? Has it gotten out of hand? Tell us in the comments!