I'm liking this poem. A lot.

It expresses the downside of having a nice body, something that people always seem to overlook.

I like the "they say they" line. I like the balance of the "say" between the two "they"s, though they don't serve the same function. Haha, call me weird, but hey. (:

Emerald eyes, hair of fire. Quite a description right there.

The constant use of "invisible" and "visible" is crafted well, for it is not abused in its overuse. It flows right with the poem's tone.

And the ending. Save your envy...save your lust. Nice antithesis there.