I’d love it if this were a small detail in a larger story. It could be an interesting underlying storyline to show the main character’s growth in starting off relishing in the fact that their ex couldn’t get people interested in their body, and then maybe pitying them, and finally anonymously tipping them, realizing that maybe if they had appreciated their ex’s body a little more then maybe things would be different. But being able to make them smile again and make them feel good about their body makes the main character see that life goes on and that there’s plenty of good in the world if you’re brave enough to kickstart it.

But I’m not a writer. I’m sure your friend has better ideas.