I thought, in Superman comics, they could show that the reason Clark and   Lois don't date isn't because she dislikes him or anything, its  because  Clark is too busy being Superman.  He uses Clark more as a  cover, to  get close to the Daily Planet, the heart of Metropolis, and  the media,  but after work he is Superman (and sometimes even during  work).  So they  just don't really spend any time together at first.
This, I guess, would go into the Grant Morrison Action Comics stories   after Clark starts working at the Daily Planet with Lois but before he   becomes the Superman we all know.
Then, in Superman comics, he has sort of slowed down to allow himself to   have a normal life.  Lois has a boyfriend now though, but Clark has   learned to allows himself to have a life as a mortal outside of being   Superman.
Another idea I had came from reading George Perez's Superman #1, they   are sort of worried about Lois and Clark being in the newspaper business   because its sort of dying.  So what do they do?  Lois became an  executive producer or something, which I love.  But my idea would have  her being like an  Anderson Cooper journalist.  She could still write  for the Daily Planet  even, but her new job would have her going out  into the field and  reporting from the front line to a camera.  She  would go to disaster  zones, super battles, war zones, etc.
As for Clark?  I think he wouldn't want to be on camera at all since he   is Superman, just wouldn't fit anyway.  But I think he could be the   reporter behind the scenes who goes out and finds information for the   others on camera, while Lois would want to do this all herself he would   do it for any on screen story being reported that needed him.
I still like Clark becoming this type of research guy for the News.  I   would love to see this used in Perez's Superman, while Lois is an   Producer of a News show Clark finds the stories and facts for them to   report.