What a horrible morning for both of them, when they first woke up with no recollection of their marriage. Still, it was a lot of fun to see how strongly they refused to believe that they were together and how suspicious they were of everything and everybody (poor Minerva).
Hermione and Draco were great friends, and the scene with Ron showed nicely how young Harry was feeling in comparison.
The visions of their sex life were yummy, and I loved seeing their effect on Harry. I don’t know how Severus could resist getting the memories back even after the enticing visions started. :)