Consensual impregnating of veteran brother's middle-eastern olive skinned wife - a marathon is run at some point - reluctant wife

[imverysorrytodothis]

I've been hunting for this one for a while through Literotica and Google search, without success. I suspect the author's account is gone, but thought I'd check if someone else knows what I'm talking about and whether the story is available anywhere else if gone from here.

Husband and his wife are trying for a kid but it's not happening. Wife is aware, or believes, it's an issue with husband's sperm. Asks husband's brother for help without husband's knowledge. She intends for it to be very mechanical, brother has some fun with it. Ends with her having a kid, but being up for trying for another having come to like the sex.

I *think* it was a nonconsent/reluctance story. It would certainly have met the criteria for reluctance.

Things I recall:

1. Story is in America
2. Wife is described as having olive skin, and I believe has an ethic middle-eastern origin
3. The husband is a vet and I think is injured from his time in service
4. There is a marathon that all three run and the brother bribes one of the husband's friends with a case of beer to overtake the husband, trigger his competitive instincts, and get him time alone with the wife
5. Brother and wife leave the marathon to have sex in some abandoned shop or some such