Amber Portwood's Missing Fiancé Possibly Spotted in Oklahoma, Police Say

Amber Portwood's fiancé, who was reported missing, might be several thousand miles away from his last known whereabouts ... TMZ has learned. Bryson City PD Asst. Chief Wayne Dover tells TMZ ... Gary Wayt, who's been engaged to the "Teen Mom" star for the last few weeks, is still considered a missing person -- but there's currently no reason to suspect foul play or a potential suicide. In fact, we're told there's…