Let me tell you a bit about myself and my dating style. Muse and courtesan both fit the description of what I do as does San Francisco GFE, but my preferred term is companion.
Why companion? Because the exact definition of the word is "a pair that go together," and doesn't that sound like us? Our sensual selves merging to create a perfect union if just for the night (though the gentleman who invest in a more long term connection get my highest priority)