Hollywood heart-throb Chad Michael Murray is reportedly engaged to an extra on his TV show ONE TREE HILL - just six months after splitting from his wife Sophia Bush. Michael Murray, 24, and his One Tree Hill co-star Bush, 23, ended their five month marriage in September (05), amid reports the actor had cheated on the beauty. Bush filed an application for the marriage to be annulled last month (MAR06), citing "fraud". US magazine People reports Michael Murray has proposed to his new girlfriend Kenzie Dalton, 18, after a whirlwind three-month courtship. The couple only went public last month after dating since December (05), because Dalton was 17 when they first became involved.