I would like to note that in this instance it is actually the male that's getting NTR'd by the old flame female lead. Even though he's the one driving the affair he's also the only one married and straying from marriage. She be single.
Yus, they're pretty dang cute and sensible which is unexpected for the loose basis of the fairy tale. I'm pretty sure that Korean novel beauty standards (with ridiculously high ceilings) are in effect. Now can we get the Snow White mom adaptation sometime? That'd be great.