that effects pretty much the entire book, and then they just don't say anything, and do nothing about it.
Here's a common example. Girl A is crushing on a guy, and the two of them have been having a pretty good time together as friends. At some point Girl A hears some rumor that the guy is in a relationship with Girl B. This really upsets Girl A because she was really starting to like the guy and she thought they might be getting somewhere, but instead of asking the guy if in fact he is in a relationship with Girl B or anyone for that matter she just says absolutely nothing, and might even start avoiding the guy. Usually at some point a few chapters later Girl A finds out the the guy is in fact not dating anybody.
This is an extremely common situation that happens between love interests in books, and also happens a lot between friends or the character and their parents.
Whenever this happens I just want to grab the main character, whoever it is and just start yelling at them, because it's pretty obvious that whatever rumor the character heard is not real, because they almost never are.
Let me know if you also have noticed this in books, and share your thoughts!