They kneel beside each other
As if they were in a trance,
Then Jane lifts up her dress
And John pulls down his pants.
Everyone knows what happens,
Or what two people do
When one is on top of the other
Making a great to-do.
The wind blows through the tunnel
Trying to find the sky.
Jane is breathing her hardest,
And John begins to sigh:
'I'm a Princeton professor
God knows what drove me to this.
I have a wife and family;
I've known marital bliss.
'But things were turning humdrum,
And I felt I was being false.
Every night in our bedroom
This is the “apparent weakness” that John has, this is why he is so willing to accept defeat, because he knows it’s not morally right for him to cheat on his wife. 
 This is all we needed to know about John to realize that he has established a successful (in society’s terms) life for himself. 
 He’s known marital bliss but that simply doesn’t fit the amount of pleasure that he desires; he craves something more.
The Couple