I just re-read Cross-Reference by
laciudad, and am currently working my way through the 'Best Friends' challenge on qaf_drabbles over at IJ...this has sparked my interest for certain types of fics, in which Brian and Justin are in a 'close,' platonic relationship (like the one towards the end of Cross-Reference). I'd like to read fics that deal with this type of friendship, and how it eventually leads to a more romantic relationship. Are there any similarly-themed fics out there?
EDIT: There are some great suggestions in the comments...including links to some peoples' top ten favourite fics! Thanks to all who helped!