Review Detail of Garnet_Fire in His Possession

I really liked this story and I was really rooting for the characters... but then the main love interest cheats on the main character... right in front of her... because she made him upset... And it was SO GOOD up until that point. I could have gotten past that but it's never brought up. He never apologizes. He blames the main character. He acts as if she forced him to cheat. And very quickly the entire incident is forgotten. I liked the book other than that part, but that incident ruined the rest of the story for me.