Janet Jackson, Wissam Al Mana engaged: singer and Qatari billionaire to marry next spring

Singer Janet Jackson is engaged to Qatari billionaire Wissam Al Mana, according to Us Weekly .

A source tells Us Weekly that her boyfriend gave her a "huge, expensive ring" earlier this year.  "She's afraid it will get lost, so she keeps it locked up!", says the source.

The wedding "will cost millions", a second source close to Jackson reveals, and is set for spring in Qatar. "He is flying in all of Janet's friends and family on private jets."

This will be the third marriage for Jackson, 46, who was previously married to producer and rapper Jermaine Dupri (the couple divorced in 2009) and singer James Debarge (they had their marriage annulled in 1985 after only one year.)