You’re reading a romance novel or one with a major romantic subplot and then the designated love interest of the female (or male) protagonist does something that hurts the protagonist and you hate them for it, and wish they didn’t end up together… but sure, they end up together.
Due to the nature of this discussion, spoilers from the books are included.
Example of how to write:
Gideon de Villiers from The Ruby Red Trilogy.
>!spoiler here!
Rhysand from A Court of Thorns and Roses. I didn’t have much of a problem with him (though I never particularly liked him either) until he >!did not tell his pregnant wife that her pregnancy is high risk and she will likely die in childbirth. He didn’t allow anyone else to tell his wife, either. She would have died of the complications had her sister not found out how to save her!< this happens in the 5th book of the series, A Court of Silver Flames.
Your reason about Rhys is what made me stop liking the entire series. I also couldn’t stand the way he treated Nesta. It felt like everyone was obligated to live him or were his enemy.