Long-familiar non-close associates make uniquely wise marriage partners. [speculation]
Perhaps this account of love as leading to risks that, in the presence of trust, would not be risks suggests the wisdom of Jane Austen's eventual marriages between cousins and other longtime but not too close associates, as in the case of Emma Woodhouse and her neighbor, Mr. Knightley.
XREF: Connects to the philosophical account of love, trust, and risk being discussed, and draws a literary parallel to Austen's novels.
FICTION: The Austen example and the trust/risk dynamic could inform a story about a marriage or partnership forged through long familiarity rather than passion.
Russell Hardin, Trust and Trustworthiness, loc. 652