What a neat piece! Nicely done, Jonathan... some intriguing writing in this; and that "girlfriend" apparently had the good sense to realize that, despite your comment, this is indeed an interesting piece of... music!
One technical comment -- to my ear, I think backing off on the reverb might benefit the overall sound.
Don't know if it was the music, but I'm sure it didn't hurt <grin>
As for the reverb, I agree - I usually don't use the ambience in GPO, as I prefer impulse responses in SoundForge... after a few years tinkering with settings, I think I have gotten where I can get those to sound pretty realistic