Thanks, VirginiaR! And thanks for reading
I've always put Lois's interest in Scardino down to the aftermath of Mayson's death. Lois and Clark kiss, Mayson dies, and then all of a sudden Clark is withdrawing from Lois. We know it's because he feels guilty, but Lois (considering how insecure she can be) is probably thinking it's because he really cared about Mayson, not Lois. Then of course Scardino is on the scene, makes it clear in no uncertain terms that he finds Lois attractive... maybe it's a bit like the whole Clark/Mayson thing. She's not really getting anywhere with the person she actually wants to be with, she's not even sure he's interested... maybe Scardino is a viable alternative.
I'm tired so that may have only made sense in my brain.