Her friendship with Mill quickly blossomed. Taylor was attracted to Mill, who treated her as an intellectual equal. Around eighteen months later, something made Taylor break off their friendship, causing Mill to write her a passionate love letter in French (the only piece of correspondence surviving from either for this period of their relationship) in which he refuses to accept her 'eternal adieu', and, although saying 'her wish is his command', insists 'her path and mine are separated, she says; but they can, they must, meet again'. Evidently, she agreed, for they were soon closer than ever, exchanging a pair of lengthy essays, "On Marriage", in 1833.