Tamar Braxton said not her, and definitely not with her sister's man! The singer recently appeared on Sherri Shepherd's talk show, and during their chat, Tamar denied rumors that she had ever dated Toni Braxton's husband, Birdman.RELATED: Wife Era Unlocked! Toni Braxton Spills Tea On How She & Birdman Celebrated Their First Wedding Anniversary (VIDEO)Tamar Braxton Reveals She Introduced Birdman & Toni To Each OtherDuring the interview, Sherri wasted no time getting to Tamar's tea. The host recalled accusations from Towanda Braxton that Tamar had a romance with Toni's boyfriend.