You spot someone across a crowded room. There is eye contact. Your heart beats a little faster, palms are sweaty, you’re light-headed, and your suddenly-squeamish stomach has dropped to your knees. You’re either suffering from an onset of food poisoning or you’re in love. But what does that mean, scientifically, to fall in love, to be in love, to stay in love? In our special Valentine’s Day post, Editor Jovana Grbić expounds on the neuronal and biophysical markers of love, how psychologists and mathematicians have harnessed (and sometimes manipulated) this information to foster 21st Century digital-style romance, and concludes with a personal reflection on what love really means in the face of all of this science. You might just be surprised. So, Cupid, draw back your sword… and click “continue reading” for more!