there were two knights in adjoined castles. Between two castles. In one castle, there lived a decorated knight with his wife, and in the other, a valorous knight who was unmarried, but in love... with the other knight's wife as was the wife because of this they "They guarded their love under various covers"
They could never be alone with each other so they were forced to be satisfied with standing at their windows and looking, talking, and "being" with one another that way. in the towers, they sent "Love-gifts flying through the air--Toss and catch. Those evenings were fair, Nothing's missing from their pleasure!
"She stood there so often, so often got up, That her lord and master got all het up; Then he'd ask her to represent Why she got up and where she went." she told him she would get up to hear the nightingales sing in the garden
This strongly irritated him. He created a plan with his servants to construct multiple traps and capture the bird. The knight took the live bird to his wife and told her she would no longer be awakened by it at nightfall. When she asked what he meant by that “With both hands the neck he broke, And at the lady he threw the body”
This took "away her joy forever more"knowing she could no longer see her lover at her window in the middle of the night. She did not want her love to think she had changed her mind about him, so she sent him the bird in a piece of gold-embroidered samite with a message to him.
The lover received the nightingale delivered to him from the lady and immediately understood her message. He had a gold box with expensive jewels constructed. "Inside, the laustic he hid. Then he sealed up this reliquary To ever after with him carry."