Our Sperm Donor. Cuckold Chronicles, #2

A young married couple trying to conceive finds themselves in a terrible situation.  After months of trying, they learn that hubby is sterile.  Undeterred, they contemplate other ways that they can make their dreams of starting a family come true.  Weary of adoption and fertility clinics, they prefer to do things the old-fashioned way.  The husband is naive to the reality of exactly what that means, but he allows it to happen...
before his very eyes.