Interesting way to use the drabble...in the middle of the story!
It's very cool that artistic Justin focuses on memories in color, that was a nice touch.
And I really liked this part for it's post-308 memory: Just like this, they had sat in this car those few years ago, only that they had not been driving into the night but out of it. Sex in Brian’s office had been breathtakingly amazing, but holding hands in his new car had been simply perfect. Justin would never forget how post-orgasmic-reunion-bliss had made them talk and laugh for the entire drive as if they had never talked to each other before – and maybe they had not, or at least, not in the same way of understanding each other.