In the interview, the two joked that they were in a serious relationship.
February 2011 - Present Kathy Griffin was rumored to dating with the Old Spice Guy Isaiah Mustafa in February 2011.
On March 7, 2011, while appearing on Howard Stern's radio show, Griffin announced that she is currently romantically involved with actor and former NFL practice-squad player Isaiah Mustafa.
Since then Mustafa has announced that he is in fact single, though he admitted to finding Griffin "amazing".
We all know for a fact now that Isaiah Mustafa takes opportunities as a blessing and does the very best that can be done at almost everything.
He has climbed the ladder of success with lot of efforts and now has net worth of approximate million.
After the separation from his ex-wife, Mustafa has been linked with some ladies.We do not know whether he is single or has a girlfriend as he seems to be laying low on this matter.The rumors about him being gay that were started by some have been claimed to be nothing but rumors.There was a rumor about Isaiah Mustafa dating Neve Campbell.According to a source that told ‘US Weekly’ that Neve and Isaiah have been dating.