fic after Sirius dies
I think this is on fanfiction.net and is 14 chapters long. Remus writes a letter to Harry offering to be there to talk or whatever, but harry is angry and throws his letter into the fire. Dumbledore takes Harry into his pensieve where he is in an enchanted sleep or something. While there, Harry spends a week learning what it would be like to live with Sirius and Remus; they are a couple, and they are his guardians. At one point they want him to do homework and he thinks only Hermione would do assignments she'd never turn in. Maybe they all fly together and spend time at the Weasley's. At the end, Harry comes out of the enchanted sleep and he and Remus walk around the lake and talk.