For some it would be a huge compliment to have inspired a novel.
For others it could quite literally be a nightmare.
The latter is how one woman felt after learning that her brother-in-law had written a book all about her.
The unnamed woman revealed the discovery in a lengthy post on Reddit, telling people what the book was about and how it made her feel.
And it's fair to say the whole thing sounds pretty creepy to both her and everyone else.
The woman begins by explaining that she used to go out with her sister's husband.
They were an item in high school for a while before the relationship ended badly.
He then started dating her sister, going on to marry her and causing a bit of a rift in the family.
She claims they all didn't get on for a long time, but recently he reached out and has been friendly to her - even asking her to read a book he had written.
The woman says she was intrigued to find out what he'd written about and agreed.
Little did she know that she was in for a big shock when she got stuck into the story.
She explained: "The book... is about us.
"It's a 'domestic thriller' about a man who realises he has married the 'wrong sister' and becomes obsessed with his sister-in-law.
"It's one of the weirdest things I have ever seen. It doesn't exactly read like a manifesto, but aspects of the story were deeply unsettling to me personally (touching on things that happened to me in high school)."
She goes on to say that she doesn't understand why he wanted her to read it.
Her only reasoning is that he either wanted to "creep [her] out" or to see if she would consider getting back together with him, if he ever left her sister.
Not having the best relationship with her sibling, the woman is now conflicted as to whether to mention it to her or forget about the whole thing.
More than 700 people commented on her post, sharing their thoughts and offering her advice.
One person responded: "Seems creepy!"
Another said: "This is weird as hell."
Some thought she should give the book to her sister and tell her to read it.
Others suggested that it could all be a strange coincidence and not some big ploy, as people are often told to write about what they know.
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