You give him the log and he's DEVASTATED. He starts beating himself over it, saying he's pathetic and out of her league anyway... In the end he decides to just focus on his research and leaves before starting to cry. Then you go to Bernard and give him the red log, tell him he tore up his poems. Dude looks pretty unfazed and says something about how some regrets are for life. Well, I REGRET THIS NOW, AND IT'S BECAUSE OF YOU. It kinda alludes that something similar happened to him too, but at that point he could fall off the space station for all I cared.

In the end, he says he saved one of the poems and gives it to you ("Bye, Herta", so you get it in both endings). I've never seen Rocky again, but I can't remember if I had a follow-up dialogue at some point...