|Overall: I really like this poem. The first two stanza isolate the narrator, sets an unpleasant tone, drops the reader into an immediate problem, and almost makes the reader a bit paranoid. The rest of the poem puts depth to the feelings and stretches the immediate problem into a chronic feeling.
I love the first two stanzas, they have a chaotic, fast rhythm that seems like eyes jerking around a loud, crowded room or the fast, staccato notes of a drum. Perfectly unnerving.
In this case, I like "they". It turns it into a world vs. the narrator scenario which I am positive was intended. This narrator is alone in a crowded world.
Stanza 3, line 2: This stanza has a nice sort of "two stroke" rhythm that is somewhat interrupted by line 2. It would be awsome to maintain this rhythm while retaining the meaning of this line. Off the top of my head, I can't suggest a way to do that.
Stanza 5, line 4: The fact that the narrator has a "one true love" suddenly, almost jarringly makes the narrator less alone. Consider changing this line to "I choose to" would seem to maintain their isolation, but also tie in nicely to the courage shown in this stanza's first two lines.
Stanza 6, line 4: I like this line, but it clashes with the last line of the previous stanza. If the narrator has a true love, it seems that at least that person would try to understand. If the narrator is receiving nothing, it brings into question the value of the true love. I think this is another reason to change the true love line.
Very nicely done.