In the end, he got much more than he had dared hope for. As Barry seems to be the only source of heat that comforts Snart, and the only one unaffected by the chill of his touch, what builds between them with the connection of their powers is like nothing either could have expected. Of course Len couldn't hear him sing, but he noticed his mouth moving in time to the lyrics.
If he made a friend or two that could understand some of what he was going through, that was just an unexpected bonus. Len considered it for a moment before smirking and nodding. When Captain Cold sacrifices himself to kill Zoom, he rises from his seeming demise as a meta human.
Only with the help of her friends at STAR Labs can she find a way to help the city and herself.