Looking for a story

[rositamia]

I am looking for a story that I have no idea if it's gen or slash. All I really remember is a conversation between Walt and Johnny about how Johnny never touches Walt and Walt thinking it's because he's going to do something evil because Johnny only ever goes out of his way to *not* touch people who are evil. Johnny explains to him it's because each time Johnny touches Walt he sees memories of him with Sarah and he didn't want to steal those from him. Any help would be greatly appreciated. Thanks.

Found, thanks to both fleetshadow and dinofly: Little Thefts by shaenie