Fan Fiction

So I was almost done with the second book of  a fan fiction I was reading. I could not take reading how constantly the two main characters are fighting, so I went over to the third book and read the ending. I was very disappointed. Yes, they obviously end up together even though the end didn't really expand on it, but it was such a disappointing ending. I wouldn't have been that mad if it was only one book instead of three with the same ending. I felt like the author made too much conflict between the two and just made the ending like that. I will not continue reading it because I was really disappointed in it.