apples and twists

From the pen of Tennessee Williams:

If you are happy, I will give you an apple. If you are anxious, I will twist your arm. And if you permit me to, I will be glad to hold you close to my heart forever and do you no harm. If I am happy, you will give me an apple. If I am anxious, you may twist my arm. And if you would like to, I would like you to hold me close to your heart forever and do me no harm. This is a bargain; only two can make it. This is a covenant offered with desperate calm, it being uncertain that lovers can drive out demons with the gift of an apple or the twist of an arm.