It's okay (^_~)
I guess I did just drop them after they found out about everything......OTL
My thoughts on them were that they were really the reincarnations of Ye-ryung and Donghae, but instead of disliking Hyun-shik and Sunjin and trying to harm them, they remain good friends. They get married and eventually have the reincarnation of Min-joo. Min-joo's reincarnation travels overseas to study and he is the one that Hyun-shik's and Sunjin's daughter Areum meets and falls in love with.
I'm sorry if I didn't really go into detail about them and just dropped them. :(. My focus was mainly on Sunjin's story that I kind of forgot about them.....OTL
I hope that answers your question (^_~)