Johnlock prompts

Lullaby

( I have this big boy head cannon that Sherlock loves Rosie a lot and John is surprised how much he cares for her it makes me s o f t anyway)

   John and Sherlock became a couple a couple months after Mary had died. Of course, they had gotten over it after a bit and John moved back in to the flat. They were talking as usual, then it just sort of happened. Lips were touched, bodies melted together, connections were made, and as John described it "magical night" Anyway, John had completely moved in after their relationship was established. He had moved into the bedroom with Sherlock, and moved Rosie into his old room.  Much to his dismay however, Rosie was becoming an increasingly uneasy sleeper. Many times in the night he would have to clamber out of bed and comfort her until she went back to sleep. It was no easy feet to say the least, Rosie was awfully stubborn when it came to falling asleep. It would take hours of rocking and back pats for her to even start to get heavy lidded. Until this night. John awoke to the cry's of his child but waited a bit because his shoulder was stiff. He eventually heard it stop and he got worried. He got up stretching his shoulder, groaning, and walked towards Rosie's room. As he was walking down the hall he noticed the gentle notes of a song playing in that heavenly baritone voice he knew to love. He walked quieter and opened the door a crack. What he saw was pure magic, Sherlock was standing in the middle of the room, Rosie in his arms, calmly singing a lullaby. Rosie was smiling and had her eyes closed in blissful slumber. John must have been enjoying the scene a bit to much because he accidentally leaned forward and pushed the door opened more. Sherlock turned and smiled. He gently put Rosie back in her crib, making sure the blankets were swaddled to her cozily. He walked over to John and snaked his hands around his waist, placing his forehead on his. John retorted by doing the same, whispering " I didn't know you could sing" Sherlock replied " I didn't know you could spy" he gave a kiss on Johns nose and he chuckled quietly. Sherlock pulled away and grabbed Johns hand. "Come along Watson you'll wake Rosie" he whispered. John smiled and Sherlock pulled them back to their bedroom. They snuggled back into the sheets facing each other and got good rest for the rest of the night.