Why may I not speak of your Beauty, since without that I could never have lov’d you? I cannot conceive any beginning of such love as I have for you but Beauty. There may be a sort of love for which, without the least sneer at it, I have the highest respect and can admire it in others: but it has not the richness, the bloom, the full form, the enchantment of love after my own heart. So let me speak of your Beauty, though to my own endangering; if you could be so cruel to me as to try elsewhere its Power.
You say you are afraid I shall think you do not love me—in saying this you make me ache the more to be near you. I am at the diligent use of my faculties here, I do not pass a day without sprawling some blank verse or tagging some rhymes; and here I must confess, that, (since I am on that subject,) I love you the more in that I believe you have liked me for my own sake and for nothing else. I have met with women whom I really think would like to be married to a Poem and to be given away by a Novel....
John Keats, letter to Fanny Brawne, 8 July 1819. I confess I've met more than a few of them myself; it's a very human failing, I think, to confuse the attraction of an idea with attraction to a person.