KG and SJH were each others primary dynamic in the cast for so long that its probably difficult for them to suddenly lose that partnership. Think of the Love and War episode where the cast members were given meaningful pairings. YJS and KJK, which makes sense, I would have picked them as each others most meaningful partner among the cast. LKS and JSJ, whose characters were helped a lot by the creation of the Easy Brothers. SJH and KG, who are the Monday Couple and have existed since the early episodes. HH is the only one paired outside the cast (with his wife), but I think HH doesn't have a significant partner to his character in the way that the others do, but HH has good dynamics with all of the cast members. But KG and SJH have always been each others go-to since the early days. In a way, their dynamics with the rest of the cast has suffered because they've been forced to rely so heavily on one another. KG had Monday Couple (with SJH) and Ugly Brothers/Two Kids/Rivals (with HH). Those are his only named dynamics. SJH has more pairings with Monday Couple (with KG) Candy Alliance (with YJS), KwangMong Siblings (with LKS), HaHyo Siblings (with HH). Her and KJK don't actually have a named alliance (maybe Ace Team) and neither does she and JSJ despite being partnered so often. We've seen in 2015 her relationships with the other members like Candy Alliance and HaHyo suffer because she spends so much time with KG for MC. Because of the brain scans that ended MC, SJH and KG lost their primary dynamic on the show.