Gentleman's Folly (words to be used are coquetry, run and course)

What shall I do
Why, write to you
Love has not run
Its true course
Round the track
Just like a horse
Your coquetry
Full of charms
Someone else
Is in your arms
So now do go away
And play your games
You can no longer
Feed my amorous flames
I shall find another one
And share my love true
Keep all your amoretti
I am happier without you