If you don’t know who Richard Feynman was, you should: an extremely brilliant physicist and communicator of science who also had a (deserved) reputation for self-promotion and for being a libertine. However, this article – about the loss of the love of his life, Arline Greenbaum – looks past the larger-than-life legend of the man and provides a glimpse into the heart of the human being who was Richard Feynman.