I remember asking about it with regard to Lois and Clark, but I don't remember very many people either liking the idea or thinking it was that plausible (especially with Lois in a potential "sub/switch" position). I could see it 50 Shades of Lois though. I kind of think of the unfinished nfic called "Care and Training of Concubines" as sort of 50 Shades of Kal (PSST, please come back aqnd work on it!)

CLARK: No. I'm just worried I'm a jinx.
JONATHAN: A jinx?
CLARK: Yeah. Let's face it, ever since she's known me, Lois's been kidnapped, frozen, pushed off buildings, almost stabbed, poisoned, buried alive and who knows what else, and it's all because of me.
-"Contact" (You're not her jinx, you're her blessing.)