"Can you hear the silence?" Powerful. Philosophical.

"You're a substitute." Impacting.

This was a bit odd, but i liked it. It seems to have a lot of feeling in it, especially the bridge and chorus. One line of the bridge seems a little odd though: "I mean, not even he knows but…" It just seems oddly thrown in there. Perhaps word it a bit better?

This is beautiful! It all just flowed so wonderfully together.

I would love opinions from a talented writer like yourself on my work; it would mean a lot to me!

"Nobody’s loved like he did, that’s why
…. I’m sorry."

I liked those lines, it seemed like it flowed well and its so true!
Also:

"I put down before making a sound"

I liked the rhyming there. Dont know if it was supposed to rhyme, but it did. Which is good! :D