Love really is the most important thing in life.
The sappy songs, the cheesy movies; they're all right. We are hardwired to form attachments with each other. An absence of love during infancy can result in physical failure to thrive, low intelligence, and life-long psychological and behavioral problems. Love strengthens our immune systems, helps us resist stress, lengthens our lives, and makes us happy. It gives us confidence and security. Meditating on the experience of love changes the brain over time, making a person better able to control negative emotions such as fear and anger, and improves empathy.
Take some time each day, even a little, to really appreciate the people you care about, and who care about you. Tell then that you love them. Don't be afraid of sounding cheesy or gay. It is important for everyone to know that they are loved, to hear it, and to feel free in it without fear.
You cannot buy the benefits of love. There is no pill. The easiest way to get it is to give it.