Expectations Change Are threesome fics allowed? If not, sorry, you can delete this post!
Expectations Change, a story in 7 parts.
NC-17 From a fairly noncon encounter to something much more, expectations do, indeed change.
Snape/Sirius/James, and part 6 actually has no James.
1 Self-Sufficiency
NC-17 Sirius figures out something interesting about Snape that has he and James very curious. Snape/James/Sirius.
Warnings: Autofellatio, dubious consent.
2 Temporary Need
NC-17 Mind games, fights for a mate who wants them both. James/Snape/Sirius again.
Warnings: Felching.
3 Restraint
NC-17 James nicks some handcuffs from Filch. Snape/James/Sirius.
Warnings: Bondage, orgasm denial.
4 Solitary Freedom
PG-13 Sirius and James decide that calling things off with Snape is the best course of action at this point in their lives.
5 Blemished
NC-17 Severus tries to warn James about the faultiness of his secret-keeper, and gets a little more than he bargained for.
Warnings: Straight sex!
6 Only Anger Luminesces
NC-17 Sirius is in Azkaban. Snape visits him.
Warnings: Fisting.
7 More than Obsession
NC-17 Missing James, Sirius and Snape find comfort in each other.
While I consider this a snack as well, it's probably more of a snames, emotionally at least. They really care for each other in it. James is more hospitable than Lily in part 5!