If you relax a little, I'm glad I inspire you, but Stan
Why are you so mad
Try to understand, that I do want you as a fan

from Eminem (Ft. Dido) – Stan Lyrics on Rap Genius

Meaning

Most likely in response to his threat that he would lose him as a fan. This marks the end of the letters, and now Em gets to say what is on his mind.

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