I don't think the lawyer "lusts" after Song Won. His wife wasn't fulfilling his emotional needs - nor was he fulfilling…
Funny you should mention fluffy rom-coms. I myself will stick to historical fiction from here on end. In this twilight zone or alternate universe vitriol, peppered with expletives, are the soup-du-jour, served with a side of wilful blindness, are served daily.
In one of the previews, if it can be trusted, it appears like some measure of revenge will be had as the wives are at work discussing the possibility of accidentally-on -purpose letting an item go on air. The doc and the professor have the most to lose. Because the professor is linked to a celebrity, he seems the likelier target. Wonder if Seo Ban will allow it since his brother may play a role...