ABANDONED. Many people are searching for this book about a couple on a train

[Barbara]

So apparently, a couple is having sex on a train. A man hears them and seems to think the man isn't doing a good job, so he approaches the woman and tells her he is going to do the job her husband can't.
I'm intrigued, and would like to find this book. Anyone have any ideas?

[Lobstergirl, au gratin]

There's been a rise in requests appearing in the group that were generated on Facebook. Our group is not intended to be a clearinghouse for every book request ever seen on social media. Rather, the purpose of the group is to help YOU locate a book that you read and then forgot. We want book queries to originate "organically."

One reason for this is that we know authors use social media to generate buzz about their books, whether openly or surreptitiously. We are not here to promote authors or books, but solely to help readers.

From now on we will close threads which arise solely from social media. Please continue to use the group to locate books that YOU PERSONALLY read and then forgot the title and author.