So enjoyable! I've been reading all day, and it's been a lovely journey through the developments of and dynamics between this version of post-war Harry, Severus, and Draco.
Really enjoyed how you set up the Harry/Draco as a counterpoint to the tie between Harry/Snape. The part about Draco containing part of Snape was an intriguing surprise. I thought Harry's hurt and shocked reaction to the way Draco had been put at risk -- as well his rush of emotion in response to the attendant and inevitable shift in actual relationships, as the just-sex weekends with Draco were poised to give way to the rest-of-their-lifetimes with Severus -- was realistically and poignantly portrayed.
I think I'll really enjoy re-reading, knowing now how often Severus placed hints and clues before Harry and Draco, leading them to the conclusion he wanted, all the while the two of them thought they were being sly and discovering Snape's guarded secrets.
And now I will end the day thinking of Severus and Harry in their house by the sea in Wales, living their wonderful quiet life, filled with evenings of reading and sex and sex and reading... :D