It looks like there are a few different ways to interpret your request for an article on Korean relationships. Because this phrase can refer to a couple of distinct topics, I want to make sure I focus on the right one for you:
Korean storytelling is deeply influenced by Buddhist concepts of fate, specifically Inyeon —the idea that encounters in this life are the result of interactions in past lives. When two leads meet in a K-drama, it is rarely random. They shared a umbrella in childhood; their parents were connected in a tragic accident; they are tied by a red thread of destiny. This framework removes the anxiety of modern dating ("Is this going anywhere?") and replaces it with the comfort of inevitability.
K-dramas and K-pop often feature romantic storylines that conform to certain tropes and conventions, which have become integral to the Super Asian Dream. Some common characteristics of these storylines include: