I'm not sure I understand it, but what it said to me was that though she's given you up, she still feels compelled to write about you and writes things about you you don't see or want to hear, and she knows you don't like it but she can't help it, and now you'll live on forever in her poems.
Even if that isn't quite right, it's a beautiful poem.

It is a poem about the woman's obsession with me and my desire not to be seen in such an amorous light by her. But who can help that? One just sort of lives on in the muse...

Thanks so much for your kind words, I'm glad you liked it.