If your true love leaves you, they obviously weren't your true love in the 1st place :. you're well rid of them!
It's said you should sit under a willow if/when grieving, cos it'll cry your tears for you. I've a friend who sings 'All Around My Fat' whilst wobbling his belly about.
Also know a Japanese tale where the translation of the woman's name is Green Willow. She's a ghost; but her true love doesn't realise until it's too late, ending up dying of a broken ♥. Now that would make a fantastic song........