My true-love hath my heart, and I have his,   
By just exchange one to the other given:   
I hold his dear, and mine he cannot miss,   
There never was a better bargain driven:   
  My true-love hath my heart, and I have his.
   
His heart in me keeps him and me in one,   
My heart in him his thoughts and senses guides:   
He loves my heart, for once it was his own,   
I cherish his because in me it bides:   
  My true-love hath my heart, and I have his.

This poem is in the public domain.

Sir Philip Sidney (1554 - 1586) was an English poet. Born into an affluent and influential family, he received a superlative education then embarked on a career as a courtier. His responsibilities included military service, supporting the arts and handling affairs of state. A favorite of Queen Elizabeth I, Philip incurred her wrath when he voiced his dislike of her fiance and she dismissed him from service. She eventually forgave him and was much aggrieved, as was much of England, when Philip died from a gunshot wound received in a battle. He was only 31 years old.