What does Lysander tell Demetrius to do?

Lysander is willing to fight to keep Hermia, and he is willing to leave the land they both love so they can be together. ... He tells Demetrius, when they are both dragged before Duke Theseus to determine who should marry Hermia: 'You have her father's love, Demetrius; / Let me have Hermia's: do you marry him.

Explanation:

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imparadis't in one anothers arms  

the happier eden, shall enjoy their fill  

of bliss on bliss, while i to hell am thrust,  

where neither joy nor love, but fierce desire,  

among our other torments not the least,  

still unfulfill'd with pain of longing pines;  

yet let me not forget what i have gain'd  

from their own mouths; all is not theirs it seems:  

one fatal tree there stands of knowledge call'd,  

forbidden them to taste: knowledge forbidd'n?  

suspicious, reasonless. why should their lord  

envie them that? can it be sin to know,