Dear Prudence

The boy is the older man's son, he's also the other man's former lover. The other man wants to be clear. He knows the affair was "unreasonable", so he takes every precaution to say he's put an end to it, that he's had no contact with the boy for several weeks. That he's sorry he gave in to his advances.

That he should have been more careful, but that he doesn't feel guilty about anything, that the father can't blame him for his son seducing him, that it was a crazy story.