The 46-year-old singer accepted billionaire boyfriend Wissam Al Mana`s proposal earlier this year and the smitten couple are set to tie the knot in a lavish ceremony in Qatar next year. According to Us Weekly magazine, Wissam, 37, gave Janet "a huge, expensive ring" but she keeps it locked up because "she`s afraid it will get lost". Wissam doesn`t want any expense spared when it comes to the wedding - which will reportedly "cost millions" - and is flying all of Janet`s friends and family in from America on private jets. Another source added: "He wants to get a top chef to create a custom menu." Once the wedding is over, Janet - who has been dating Wissam for around two years - is keen to start trying for a family. The source said: "She wants kids. If she can`t have them, she will adopt." Janet has been married twice before, once to R&B singer James DeBarge and the other time to music video director Rene Elizondo. Before Wissam, she had an on/off seven-year relationship with record producer Jermaine Dupri.