Imagine a world where love knows no boundaries, where two people can marry regardless of their gender. Now open your eyes. In some parts of the globe, this is reality. In others, it's a distant dream. Twenty years ago, a mere 26% of Americans supported same-sex marriage. Today, that figure has skyrocketed to 69%. That is extremely rapid cultural change in favour of love and liberalism. But hold your applause, because here’s the plot twist: most of the world is not joining the parade. When asked about their least desired neighbours, most Africans and Asians still say “homosexuals”. The roots of this divergence go back two thousand years. Truth be told, it’s all about love. In 1950, most of the world was homophobic, but with crucial cross-cultural variation. Some parts of the world celebrated marital love and secular liberalism. Shaking off the shackles of sexual puritanism, activists could persuade wider publics to welcome diversity, for ‘love is love’. Patrilineal societies have been far less receptive, as they prioritised intergenerational loyalty. Religious revival is another major impediment, exemplified by Brazilian Evangelicals, fanning the flames of homophobia. So, for those curious, here’s a little preview of my second book, “The Great GAY Divergence”