Is there someone you can't stop thinking about? Just a friend or is it a crush? Could all those heart-pounding feelings even be love? Where do these emotions come from? The answer is in the science of affection! From enjoying the bond of family and friends or the smallest flutters in your stomach to the gooiest, mushiest of loves, emotions can run high. But next time you or your friends feel all warm and fuzzy, you'll understand what's really going on in your brains. Plus, you'll learn tips for decoding what's happening in your body and find out how to strengthen your self-love. Mental health is as important as your heart, so when affectionate behaviours and feelings have crossed the line, you'll also learn when it's time to reach out for help.