Los Angeles: Singer Usher is engaged to his long-time girlfriend and business partner Grace Miguel, sources have confirmed.
The couple have been together since 2009, following Usher's split from his ex-wife Tameka Foster.
"She's happy but they're trying to keep it quiet," a source was quoted by usmagazine.com as saying.
Miguel's ring finger was noticeably adorned by a giant diamond ring at an event held Jan 10.
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