In writing the book Love 2.0: How Our Supreme Emotion Affects Everything We Feel, Think, Do, and Become, here are 10 lessons I have learned: 1. It can be hard to talk about love in scientific terms because people have strong pre-existing ideas about it. Love, as your body experiences it, is a micro-moment of connection shared with another. 2. Love is not exclusive. In reality, you can experience micro-moments of connection with anyone -- whether your soul mate or a stranger. 3. Love doesn't belong to one person. Love is a biological wave of good feeling and mutual care that rolls through two or more brains and bodies at once. 4. Making eye contact is a key gateway for love. Meeting eyes is a key gatekeeper to neural synchrony. 5. Love fortifies the connection between your brain and your heart, making you healthier. When we ... learn ways to create more micro-moments of love in daily life, we lastingly improve the function of the vagus nerve, a key conduit that connects your brain to your heart. 6. Your immune cells reflect your past experiences of love. People who build more micro-moments of love in daily life also build healthier immune cells. 7. Small emotional moments can have disproportionately large biological effects. Little by little, love begets love by improving your health. 8. Don't take a loving marriage for granted. Love is something we should re-cultivate every single day. 9. Love and compassion can be one and the same. Compassion is the form love takes when suffering occurs. 10. Simply upgrading your view of love changes your capacity for it. When people take just a minute or so each day to think about whether they felt connected and attuned to others, they initiate a cascade of benefits.