Changmin would hold Sooyoung extremely close to him whenever they went out shopping. He then glare directly at anyone who would look at Sooyoung with  'I'm-checking-out-your-girl-so-what?' eyes.

 Whenever girls used the excuse for an autoraph, or even worse a photograph, to be close to Changmin, Sooyoung would boil. She would then saunter up to them and sign her autograph too, smiling at their annoyed faces.

 The message was clear: people should know where the damn line is, so they can stay behind it.