I suppose some of the features match my own
Shape Of My Heart :
Stranded in a snowbound wilderness and caught in the middle of a dangerous situation, Clark and Lois are forced to take refuge in a lakeside cabin. There, they find that relying on each other's strengths in the midst of crisis help them come to a new understanding of just what they mean to each other.
But it wasn't a revelation fic, so it's probably not the one you're looking for.
LabRat