"Nothing does," Hermione answered before Ron could.  "There is only one person in my life with the right to have any issue with who I am seen in public with, and that is Severus.  You know.  My husband.  And while he may still be getting used to this arrangement – as a matter of fact, so am I, when it comes to that – he’s been nothing but wonderful with me."  Severus gave her a small smirk, but she went on. "The night of the Opera he knew exactly where I was and who I was with, and had he any issue with that, he needed only say so – and if he had, it would be between me and him."