If that's what you want, then you should definitely read those parts. It explains why Robin pushed Dallas away the first time, but (sigh) she pushes him away again. Silly girl. Also, they have sex and I don't gloss over it. I feel it's part of their complete story but I re-wrote it so many times that I sorta buried it on purpose.
WARNING: THIS UNLOCKS LITERALLY EVERYTHING IN MEMORABILIA! SPOILERS!
If you want to see it (and everything else as a by product) hit F1 while in game and type: show memo
The order is: By The Pier > Flashback: Robin's Song > The Dark
This song overlaps into the flashback but doesn't in the Memo: http://ccmixter.org/content/ad...
To turn this cheat off, type it again in the same way. I suggest doing that since even unreleased/unfinished scenes may pop up for you and in general would suck the fun out of the game.
If you do read it, could you give me feedback on whether it should be required to their storyline?