R+B star Brandy finally has something to smile about as she battles accusations she caused a December (06) freeway pile-up that left one motorist dead - she's allegedly become engaged. Movie star/singer Tyrese Gibson has proposed to single mum Brandy, according to internet gossip site Hollyscoop.com. Sources claim the couple has secretly been an on-and-off item for years, and Gibson asked Brandy to be his wife at a family party held earlier this month (Jun07). The party, which Brandy threw for a pregnant pal, quickly became an engagement bash, according to the website. Like his reported new fiancee, Gibson has faced legal problems in 2007 - he was at the centre of a criminal investigation after reportedly punching his pregnant girlfriend in the stomach in January (07). At the time, police sources in Los Angeles confirmed the 2 Fast 2 Furious star's live-in girlfriend, who was then five months pregnant, called police claiming the singer had punched her in the stomach twice during a heated argument. Gibson's girlfriend has since played down the domestic fight, insisting reports were distorted, and the actor/singer has branded the reports "not true". Brandy reportedly wed Robert Smith, the father of her daughter Sy'Rai, when she discovered she was pregnant in 2001. Producer Smith claims the couple was never legally married. Brandy called off her engagement to New York Knicks basketball player Quentin Richardson in October 2005.