One of my faves of all time is The Boy from New York City (http://www.http://scoobygang8.livejournal.com/?skip=20&tag=boy%20from%20new%20york%20city) by scoobygang8. Basically Brian takes that job in New York in season 1 and he and Justin meet up in NYC years later where Justin has moved to live with his boyfriend. Angst ensues but it all ends up in a happily ever after.

Hope you enjoy! (You should read her other stuff too - it's pretty awesome...)