I like this one. I would change a couple things in this stanza for the purpose of flow.
"My mouth tries to speak, but my heart interrupts
I cannot say, for I feel I will corrupt
the love of my life, standing so perfectly there.
He doesn't know how I treasure what we share."
I would say:
"My mouth tries to speak, but my heart interrupts
I cannot say, for I feel I' ll corrupt
the love of my life, standing perfectly there.
He doesn't realize the treasure we share."
You don't have to take my suggestions of course, I just think it would flow better this way. Overall, nicely done.