True-love facts about modern dating, marriage, breakups, and makeups, from the Guardian ’s popular relationships advice columnist Is love blind—or does Cupid calculate? Luisa Dillner, a medical doctor and the entertaining “Love by Numbers” columnist for London’s Guardian newspaper, sifts through the latest scientific research to answer the questions of the lovelorn and the love crazy alike. She tackles perennial matters of the heart, such For those curious about the chances of tempting someone to leave a spouse (50 percent of those approached take the bait) or if Web romances bloom in the spring (the peak times for online love are actually January, February, and September), Dillner is the perfect—and amusing—guide to the science of living happily ever after.