The Buddha said that when conditions are sufficient something manifests and we say it exists. When one or two conditions fail and the thing does not manifest in the same way, we then say it does not exist. According to the Buddha, to qualify something as existing or not existing is wrong. In reality, there is no such thing as totally existing or totally not existing.
Thanks to impermanence, everything is possible. Life itself is possible. If a grain of corn is not impermanent, it can never be transformed into a stalk of corn.
If we live with the understanding of impermanence, we will cultivate and nurture our love. Only then will it last. You have to nourish and look after your love for it to grow.
Nothing can exist by itself alone. It has to depend on every other thing. That is called inter-being. To be means to inter-be. The paper inter-is with the sunshine and with the forest. The flower cannot exist by itself alone; it has to inter-be with soil, rain, weeds and insects. There is no being; there is only inter-being.