Here he arranges traps for his mistress and the reader walks right into them in concern with her. For that reason I want to give a short overview of the 17th century, the main issues of that time and who were leading poets.
In that case the poet reasons, seductivelythe woman would feel no shame if she allowed herself to be seduced by the poet. Donne is obviously witty; he plays around with the image of a flea to seduce a woman.
He opens his argumentation with the observation of a flea which has sucked blood from him and afterwards from her.
The categories the images are taken from must be so contradictory that the reader is surprised, even shocked. The woman is about to kill the flea but is stopped by the man In the third stanza the speaker, aware that she has killed the flea, is close to admitting defeat.