Imagine if that time, early in their career, they still have those little crushes with each other. Once, on their way to an overseas schedule, in the plane they're in a turbulence happens. Even when it’s over, Heechul still has his arms around Leeteuk protectively, leaving Leeteuk no choice but to keep his face buried in Heechul’s chest. Yesung chances a look at the two in the same row as him and he goes and whispers, trying hard not to snicker, “Heebongie hyung, it’s already over, you can let go of Teukie hyung now.” but Heechul turns his deadly stare to Yesung and replies to him in a hushed voice to shut up and leave him be. This protectiveness continues even after the group branched into SJ-Happy, and after one performance, Leeteuk spots Heechul downstage, enough to bring out that sweet, sweet smile of him. Leeteuk then rushes to him, shyly asks him what was he doing there and that time Yesung was passing by them, so he doesn’t miss the chance to clear his throat and breathe out that "Somebody’s whipped." and that gives Heechul enough courage to circle his arms around Leeteuk's waist (of course, side-eyeing Yesung first) and tells him he’s there to take him to dinner.