Happy Birthday, 'Daddy'

In honour of the not-too-distantly passed birthday of Severus Snape, and the far more recent of our beloved Alan Rickman, here's some unnecessarily adorable married Snamione fluff with suggestions of smut and just a hint of paternal panic. Technically an 'AU future' for our ongoing marriage law fic, 'The Ties That Bind', but can be read as a stand alone without any trouble.