Sentence:  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 <WSD>intimacy</WSD>. 
Meaning of the word marked with <WSD> tags:  Feeling or atmosphere of closeness and openness towards someone else, not necessarily involving sexuality.