Justin returns home post 513, visits Brian's best friend (not Mikey) in different state

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Please help! I have these few scenes in my head and I don't know if they belong to the same series of fic....
-it's post 513 and Justin kinda tells Brian over the phone one night that he would like to come back for good; Brian calls back and tells him he can come back 'tonight' if he wants to
-they go away for a holiday and learned that they haven't been with other people since that call and made love raw (I think rings were also exhanged)
Erm, not sure how it ends..I seem to remember a couple of chapters told from an OC's POV...The OC is Brian's best friend before Mikey, who had moved away when they were young, he is straight, married and has a mentally-handicapped son whom Justin later taught to paint...

Updated:Thanks lacrimio,the OC part is in the epilogue of Everything Changes (post season-4 fic) by plumsuede. Hmm..anyone has any idea which post-513 fic contains the 2 scenes I have desribed above?
Found thanks to tantenietje,the scenes belong to chapter 2 in plumsuede's Beyond the Yellow Brick Road.
--On the same note, her fics are so excellently written that some day, I hope to have time to reread them word for word :)