The media knows and is happy to obey the marching orders:
Idealize Obama and everyone associated with him. Since so much of the media is obsessed with sex - more often than not homosexual - then sex is becomes a key story about Obama. Remember the shirt-off photos?
The logic is: If we are going to make people believe that Barack Obama is a heterosexual stud, then we must make people concur that he must have seen something in Michelle. We think the media is protesting too much that this is the case.
I wonder how the lib media would have handled a pair like Franklin and Eleanor Roosevelt? Now THEY would have really stretched the MSM’s image-creating talents.