Losing James and getting Harry changed everything, of course. Having Harry in his care calmed the tempest that had always raged around his bones, as though he finally had something to channel all of his frenetic energy into. To Sirius’s surprise and relief, being Harry’s father made him feel calm and focused for the first time in his life. He’d poured himself into Harry, and promising his therapist that he wouldn’t date was the easiest thing in the world.