Exploring Second Lead Syndrome

Exploring Second Lead Syndrome

After watching both Emergency Couple and Sly and Single Again this week, I've been thinking about Second Lead Syndrome again. Both shows feature a woman caught between two men, and in both cases, the female lead is clearly destined to go back to her ex-husband from episode 1. Neither ex-husband is exactly a shining paragon of awesome boyfriend-osity, but hey,  he's rich and he's on the promotional poster, so it has to be true love, right?

It's no secret that Emergency Couple is giving me what might be my worst case of Second Lead Syndrome yet (We're talking Young Do levels here, folks. Things are bad.). In the case of Sly and Single, I feel sad for the second lead, but he doesn't have me clutching my heart and sighing at the TV or anything, either. The comparison of two very similar shows has got me wondering what it is that sparks Second Lead Syndrome (SLS) and why it is that I catch it for some dramas and I just don't care for others. There seem to be a few different factors at play in my self-diagnosis of this ailment: