Source close to Brown calls timing 'purely coincidence.'By Gil Kaufman Rihanna and Chris Brown Photo: Frank Micelotta/ Getty Images Chris Brown is under a court order that requires him to stay from former girlfriend Rihanna. And while that order — one part of his sentence for an assault on Rihanna in February on the eve of the Grammy Awards — means that Brown has to keep a certain physical distance from his ex, there's nothing to say that he can't be professionally close to her. That reality made for a strange situation on Tuesday, when Rihanna released her first new single since the incident, "Russian Roulette," just hours before Brown announced the dates of his "Fan Appreciation" tour. Then, approximately 24 hours later, Brown dropped the second single from his upcoming Graffiti album, "Crawl." Given the situation between the two since the altercation, the close proximity of their big career re-boot moves was curious to say the least. While Brown's label had no official comment on the timing of the activity from the former couple, a source close to the Brown camp denied that it was anything but "purely coincidental." Given that both artists are releasing fourth quarter albums and are on similar album/ tour/ recording cycles — both released their debuts in 2005 and a follow-up in 2007 — the source said the overlap was not planned at all.