Be soft, even if you stand to get squashed.
-E. M. Forster
Love has its own time, its own season, and its own reasons for coming and going. You cannot bribe it or coerce it or reason it into staying. If it chooses to leave your heart or the heart of your lover, there is nothing you can do and nothing you should do. Be glad that it came to live for a moment in your life. If you keep your heart open, it will surely come again.