beta
No because it's the fact that they are both just taking turns raping her. She says no, she means no. She has had consensual sex with both of them at different points (I'm pretty sure, didn't bother actually reading most of the sex scenes cuz they were pretty boring cut and paste) but there have been way too many times where the act was started and she clearly said no (it doesn't matter her reason for saying no or if part of her "actually wanted it" by the end, because the other part clearly didn't).
Initially, she didn't have an "affair" with his brother, she was raped by him multiple times and then he acted like it was an equal act.
Honestly she's really just treated like an object for these two guys to fight over.
Anyway, you can't convince me this isn't a story about an emotionally and sexually abused woman.