My wife and I tried forever to conceive. I finally got tested and learned I’m infertile. We couldn't afford in vitro. In desperation she suggested we recruit a "donor" to impregnate her naturally – my older brother, who has three kids. I reluctantly agreed. He said yes, provided we didn’t tell his wife.

For months they fucked frequently. It wasn’t clinical - I could hear them moaning and grunting. She loved getting pounded by him. Still, no pregnancy. "Be patient," he said.

Then yesterday his wife mentioned how great their sex life had been since he got a vasectomy last year.