TRACY MORGAN BEEN DOING HIS THING!

Tracy Morgan may have filed for divorce from Sabina - his wife of 23 years - on Friday, but he was serious about another woman for the last two years of his marriage. Pals of the "30 Rock" star say the comedian has frequent flings with different ladies, but none has stuck around as long as Tanisha, a Karrine Steffans look-a-like. The couple was first spotted together at the "First Sunday" premiere in January of 2008. A rep did not respond to calls for comment.