Maybe they don't understand love, but they pursue warmth wholeheartedly. Leaving is not a blessing; staying is because there is still hope. We are not very lucky, and we can't find the lost heart over and over again; we are lucky enough, and we don't miss it because of loneliness in the vast sea of people. Even if there is no "I love you" in our world, this warmth is enough to make each other fall in love.