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"Rihanna reportedly invited ex-boyfriend Chris Brown to her Valentine&amp;#039;s Day birthday party.  The &amp;#039;We Found Love&amp;#039; singer, who turns 24 on February 20, invited her former partner to a star-studded bash at her Beverly Hills mansion on Tuesday (February 14).    The couple separated in 2009 after Brown assaulted Rihanna, receiving five years&amp;#039; probation and six months of community service.  They were believed to have reunited recently, though the state of their relationship has been disputed after Rihanna condemned Brown&amp;#039;s romance with model Karrueche Tran.  An alleged partygoer tweeted after the party: &amp;quot;If Cupid was here he would be very happy everyone @Rihanna bday party was coupled up.  &amp;quot;All I can say, CB was invited and she (Rihanna) was acting like the happiest girl on her birthday and probably got what she asked for.&amp;quot; A source added that Rihanna had been &amp;quot;going crazy&amp;quot; at the big-budget event, which was also attended by Katy Perry and Bruno Mars.  &amp;quot;By the end of the night [Rihanna and Katy] started a cake fight and were dancing together while Bruno and Chris looked on open-mouthed, cheering,&amp;quot; they told The Mirror. &amp;quot;RiRi made sure Chris was having a good time but then he kept a low profile, spending most of the night in a corner with a few pals.&amp;quot; Watch Rihanna in the video for &amp;#039;You Da One&amp;#039; below:      "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.digitalspy.com/showbiz/news/a366072/rihanna-coupled-up-with-chris-brown-at-24th-birthday-party/>