Love is acceptance. Him melding into her and her melding into him. Love is opening up to each other and not being embarrased about the fact that they're in love.
Love is affection. Holding hands and cuddling with each other. Lookin into each other and saying "I love you".
Love is knowing. Knowing that he will be there for her and she for him. Knowing that they'll be together even in death.
Love is letting go. Letting go of fear and showing who you are; knowing that you'll be loved none the less.