When Donovan Malone realizes he can read his girlfriend’s mind, it seems at first like magic. She is his first love, and from her he learns about dating and courtship and sex. It is the sort of relationship one can experience only at that stage in life, and it can’t last. When Donovan meets Diana, they have a rocky start but explore questions science doesn’t often ask: can you see empathy on an EEG or detect intimacy with an MRI? And what about love and other secondhand emotions?