Whether you're putting a ring on it, or calling it quits, the law has something to say about your relationship.
Australia’s current debate on marriage equality reminds us that sex and love are volatile subjects in every culture. So imagine writing about them in a country like India, writes Christopher Kremmer.
What disappoints most about the Ashley Madison uproar is how the exposure of 30 million people is being shoe-horned into a one-size-fits-all view of sex and relationships, writes Rob Brooks.
How couples interact can provide clues to the fate of their relationship but more research is needed, write Lisa Williams and Rebecca Pinkus.
Conflict and cooperation between the sexes will be discussed at an unprecedented gathering of economic experts and evolutionary biologists at UNSW next week.