intimacy

1879, Robert Louis Stevenson, “Truth of Intercourse” in Essays, English and American, The Harvard Classics, Volume 28, edited by Charles W. Eliot, New York: P.F. Collier & Son, 1910, p. 287, The habitual liar may be a very honest fellow, and live truly with his wife and friends; while another man who never told a formal falsehood in his life may yet be himself one lie—heart and face, from top to bottom. This is the kind of lie which poisons intimacy.

1787, Robert Burns, Letter to Dr. Moore, 23 April, 1787, in J. Logie Robertson (ed.), The Letters of Robert Burns, Selected and Arranged, with an Introduction, London: Walter Scott, 1887, p. 57, I have formed many intimacies and friendships here, but I am afraid they are all of too tender a construction to bear carriage a hundred and fifty miles.