This letter from Jefferson to Maria Cosway, October 12, 1786, is fascinating and has many implications for consideration of romantic love from the perspective of an admirer of Epicurus. This post is just to start the thread with relevant links:
NewEpicurean post: "The Greater Part of Life Is Sunshine"
Text of Letter at NewEpicurean.com
Founders Online Transcript of Letter
Handwritten Version of Letter at Library of Congress