I'ev been with many stone lovers, but I've also been the stone lover. Maybe I can help explain it to you, Crashgasm.
Think of it this way, first:
Do you enjoy anal? Do you know someone else who doesn't? Let's focus on someone who doesn't like anal.
They don't like it. They don't enjoy it. They don't get anything out of it. Now, here comes this partner, and they love their partner, and their partner really loves anal. Their partner every time they're intimate asks why they can't just try anal, and after a while it really starts getting on their nerves. Why should they keep being asked? They've said no, they are not interested in it, and it gets really frustrating having to reestablish that, no, you still don't want to, and if you ever change your mind, they'll be the second to know.
Being stone is different from person, to person, though.
Some stones don't want to be touched. Some stones don't want to do the touching. Some stones don't want to be touched above the waist, or below the waist, or don't want to be touched in specific ways.
Many stones enjoy pleasuring their lover far more than they enjoy being pleasured themselves, and they can derive immense satisfaction simply from pleasing their partner.
Finally, I want to comment on the idea of "melting the stone." I am of the mind that you cannot ever melt someone's stone; people melt it themselves and let others hang out with them in the icebox.
I hope that helps.