Love always broken heart why?

The problem is not with love. The problem is by choosing and overlooking the mistakes of those we love, on the pretext that it will change and that love will make miracles. In the end, we discover that the frequent concessions made to the other side were the cause of our broken hearts. Love, in order to succeed, also needs a mind, and not to make major concessions under the pretext of love and choosing the right person.