Answer:
What gets wetter as it dries?
I drive men mad for love of me. Easily beaten, never free.
My first half is normally made of stone, my second is crazy, and I taste sweet when complete.
Many hear me, but no one sees me, and I only speak when spoken to
Lovely and round, I shine with pale light, grown in the darkness, a lady's delight.
I have two eyes in the front and a lot of eyes on my tail