Still there is nothing going on between them,but there is a LOT of signs that there will be.Like the "almost kiss" in "Bride",or the fact that Lois is inlove with Clark,and he is inlove with her.Also there is clues in the episodes "Committed" , "Infamous" , "Hex"...
Let's just hope that soon enough we will have our "Clois" Happy Ending...
Look this official video for Season 8