(About a 1 minute read)
The bad news is that you cannot love without risking almost certain pain now and then. Even the most skillful and conscientious lover will now and then inadvertently hurt you. Even the greatest loves will someday come to an end — and often tragically (that is, in the ancient sense of tragedy — due to a flaw in human nature).
The good news is most — but never all — of the suffering most of us experience when loving someone comes from clinging unnecessarily to someone in an attempt to preserve the pleasures or avoid the pains of loving them. If you can see this, and see it very clearly, you will put an end to the clinging, and with it, most of the suffering.
You need not do anything else. You need only see it. Once seen, your mind will reflexively avoid clinging like it would reflexively avoid a snake in the grass.
That is not something you should believe. No matter how strongly you believe that, belief will not bring about an end to the suffering. You must see it, instead. You must watch it happening. You much watch the whole process of clinging producing suffering — and no one can watch it for you. No one can change a thing merely by telling you about it.
The way to watch it is through meditation. Not introspection. Not contemplation. Meditation.
Just my two cents.