Valentine’s Day is here - the one day of the year where you can be unashamedly romantic and splash out on posh dinners, flowers and chocolates for your beloved. So we dig into the science of love.

First, we find out about a monogamous rodent that has a special way of forming lifelong bonds with its partner. Next, we discover how to apply maths to your love life, before delving into the technology behind AI chatbots, and find out if a new dating app can help shine a light on the science of compatibility.

Plus, we are joined by Bianca Acevedo, a research scientist at the University of California, Santa Barbara, who studies the neuroscience of love. She reveals what’s going on in our brains when we are infatuated with someone and what purpose love serves.

Presenters: Marnie Chesterton, with Tristan Ahtone and Edd Gent Producers: Alice Lipscombe-Southwell,nWilliam Hornbrook, Debbie Kilbride, Imaan Moin and Noa Dowling