#Person1#: They got a divorce at last. 
#Person2#: It's inenvitable. Their love wasbuilt on the sand, and this is why their marriage has landed on the rocks. 
#Person1#: You said it. Love buit on the sand will soon be on the rocks. 
#Person2#: That give us a good lesson. 
#Person1# and #Person2# learn that love built on the sand will soon be on the rocks from someone's divorce.
a good lesson