There’s a unique kind of heartbreak that only K-drama fans know. No, it’s not the classic lovers-separated-by-fate or the evil mother-in-law sabotage. It’s the slow-burning, devastatingly tender ache of Second Lead Syndrome , falling hopelessly in love with the guy who never gets the girl. You know the one. He’s the childhood best friend, the quiet protector, the emotionally available guy who listens (green forest), holds the umbrella during a downpour, and shows up every. si