We pledged our hearts, my love and I,
I in my arms the maiden clasping;
I could not tell the reason why,
But, O, I trembled like an aspen!

Her father's love she bade me gain;
I went, and shook like any reed!
I strove to act the man---in vain!
We had exchanged our hearts indeed.

Samuel Taylor Coleridge

http://www.poemhunter.com/poem/the-exchange-9/