You have been a single parent for about a year now. You and Sherlock are work partners and somewhat close friends so he's been staying with you and helping you take care of the child so your not as stressed.

One night your child is crying and you were tired so you walked over to your child who was in their crib and start gently and comfortingly rubbing their back and start to sing them a lullaby. Sherlock heard the crying and walked in on you singing the child a lullaby