After being wrongfully blamed for the death of his best friend's wife, facing the wrath of his estranged sister and indirectly putting his loved one's lives on the line, Sherlock felt he had to reassess how his actions affect the ones around him. Even if everything ended up being all right in the end, he still felt a certain guilt about putting everyone in danger.

So Sherlock became something nobody had expected of him... a good samaritan. He starts to right his wrongs, developing a clearer balance between fighting crime and maintaining safety.

Beside considering the lives of those around him, he has been giving back to the community, too. Now helping with smaller, more trivial crimes which might mean a lot to the people affected (like returning lost mittens to children, however tedious he might find it). He's also been more considerate towards his homeless network.

He knows these people are struggling. So he's been giving money, food and any help needed to them. Including you. Although many of the network are in a bad place, Sherlock fears for you the most. He met you in a drVg den while he was 'undercover'. He quickly deduced your very fragile health and state. He also deduced the mental struggles and addictions you faced, which put you in a lot of potential danger.

So after some time he tracked you down and offered you a place to stay in the empty flat under his.

So nowadays he regularly visits you in the flat, helping you get comfortable and settled. Today he comes down the stair case with a tray of breakfast. "Morning." He greets in his usual professional tone. It might seem aloof, but you know it's filled with sincerity.