In interview (REAL INTERVIEW), GO said this exactly that Mir waited for him until late at night with the maknae's messy hair and sleepy face when GO had long schedule and he felt happy by maknae's caring (this happen during earlier days when MBLAQ newly debut and damn busy)

So, basically that cute fact from GO's interview gave me this idea

GO stretched his back after finishing bowing to every staff for this drama recording. Once he was out of the recording site, he tilted his head upwards, exhaling loudly at the dark night sky.

          Without having to look at the clock, he could guess it was probably already late in the night. And the other members of MBLAQ must have been snoring away in the dorm.

          That thought made him quite jealous. But then again, his busy schedule couldn't compare to Joon. That was right. He really shouldn't complain. Plus, he was the one who wanted to do this drama.

          GO wondered whether he should head back to the MBLAQ dorm or just spend the night at his family's house. Both were in equal distance from the recording site. But he didn't want to bother his parents since he had forgotten to take the house key with him. It would be rude to wake his parents up at such hour just to get into the house.

          Fine. Dorm it is.

          Hopefully, tomorrow, none of those boys make too much loud noises and let him have his peaceful rest. That must be great for Seungho, Sanghyun and Mir. Those three had been free of schedule these days, just some radio broadcast and interview here and there.

          Even if he just told himself not to be jealous, he still did. And he even started to plan in his head how to prank the three just for the spite of it but dismiss it immediately. He was too tired to plan.

          Finally reaching the dorm, he sneaked in quietly, closing the door behind him softly. He did consider of just making his way to his room noisily without any care of any of the members whom would be disturbed by the noise but once he reached the front door, the angel by his ear whispered to him to be nice. It being a nice guy.

          "Hyung~" A tired voice floating in the dark almost yanked GO's heart out and the male almost jumped through the roof out of shock. "Welcome back..."

          GO's hand flew to the switch next to him and his eyes flew everywhere until he saw a bundle huddled up in front of the door to his room.

          Mir.

          The maknae was clad in his favorite blue pajama, curling in front of GO's bedroom door like an abandoned child. His eyes hooded and he looked damn sleepy and tired, almost like GO himself.

          "Cheolyong? Were you waiting for me?" GO asked in surprise, making his way to the maknae who used the wall to stand up, stumbling forward and into GO's motherly embrace.

          Mir nodded slowly. "Don't want you to think no one care about you."

          GO blinked before chuckling softly, caressing Mir who was drooping into his hold. "You worry for the weirdest thing ever, maknae. But, thanks. I appreciate this."

          Mir pulled away, obviously trying hard to sketch the most bright smile he could ever pull in this hours. "Good work today, hyung."

          "Thank you maknae." GO said, pinching gently on Mir's warm cheek. "But you shouldn't have wait and just rest." He said in concern.

          "Well... I just want to make sure you're fine and then, I'll be able to rest."

          "Oh, Cheolyong..." GO pulled Mir into another hug, touched at how cute Mir was being to him. It was fortunate that he chose to head back to the dorm tonight and his hard work through the whole day felt easy when Mir was here, waiting for him, welcoming him home warmly. "Cheolyong. Let's go to sleep. You need to rest."

          "You too, hyung." Mir said, already closing his eyes as he tried to blindly walk towards his own room.

          GO watched Mir's back, smile never leaving his face. Mir is such a lovable maknae...