Falling in love is just accidental, like two grains of dust meeting in the sun, like two fallen leaves touching in a whirlpool, like two lost travelers hiding in the same cave in a storm.
We always like to put a halo of fate on love, saying that it is a marriage from a previous life, that it is the red thread of the old age, that it is a destined encounter. But thinking about it carefully, it was just that you happened to be wearing a white shirt that day, and I happened to turn around and take another look; it was just that there happened to be two empty seats in the cafe, and the waiter happened to arrange us in adjacent seats; but we both missed the last bus and had to wait at the bus stop in the rain for an extra twenty minutes.
Destiny never deliberately arranges love, it just sows a handful of seeds casually and lets them drift in the sea of people. Those who eventually fell in love were just two grains that happened to fall on the same soil, and they happened to sprout at the same time. More seeds floated in different directions. Some fell on the concrete floor, some were pecked by birds, and some were buried too deep underground and would never see the sun.
We praise the magic of love, but we forget that there are seven billion people in the world, and there are countless accidental encounters every day. When you fall in love with this person, you just meet a suitable person at the right time, and this person happens to be willing to reciprocate your love. Change the time, change the place, change the mood, and the ending may be completely different.
So there is no need to be miserable about the lost love, which is just an accidental passing; and there is no need to be complacent about the love gained, which is just an accidental gift. Like a sandcastle on the seaside, it forms by chance when the tide rises and dissipates by chance when the tide goes out.