It's pretty good stuff. I noticed you tend to use the past perfect tense a lot (at least I think that's what it's called). For example, where you say "had changed," take out the had. It'll flow a lot better that way.
Also, I'm not sure if that part about he-she-it was supposed to be funny, but I laughed . Maybe it's just cause I'm so immature. Anyway, good writes.