I am looking for a story and I don't remember the title.
The story begins at the Department of Mysteries. Harry and Ron almost fall into the veil, but Hermione saves them by using a marriage/bonding spell that marries/bonds all three of them together.
At some point of the story, Ron is injured and his wounds require regular application of a salve/potion/ointment. Harry and Hermione apply it on him; however it is excruciatingly painful to the point that Harry orders Ron to bite on his (Harry's) arm. They later find out that Kreacher had tampered with the salve/potion/ointment (I don't remember this part very clearly, but I think that Kreacher replaced the salve/potion/ointment with a concentrated version instead of the dilute version that Ron actually required).
These are the only parts of the story that I remember and I would love it if anyone can give me the title and possibly the URL of the story.
Thanks in advance!