If love is a many-splendoured thing, this seems even truer of couples who transcend great uncertainty, like the middle-class Singaporean man who went against the tide for years to wed his family's former domestic helper, his first love and soul mate.
Then there are couples on a quest for something bigger than themselves, like the halfway house founders who have embraced the marginalised, including hardcore drug addicts, as their own family.
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A version of this article appeared in the print edition of The Sunday Times on February 10, 2019, with the headline Crazy little thing called love: Unconventional unions that have stood the test of time. Subscribe