I don't get a woman who puts a love letter of her boyfriend's ex-girlfriend on the bathroom wall of their house.
This might not cover it but it might be because she is just blatantly accepting that he has had a thing for her, and that she saw something of it within herself and that she wishes to remind herself of what parts she feels she manages to extend so that he'll find happiness with her without having to go "backwards". Also, she might find the love letter quite aesthetic and put it up for that reason. And she might also have enjoyed the way it was put, so much it had became art for her in her eyes and won't part with it even if the boyfriend leaves her. And maybe she's secretly having a crush on his ex-girlfriend and copes with it by keeping the one thing meant for someone else but reading it out of her perspective, keeping an unhealthy trait around too long and end up killing her boyfriend because he DIDN'T talk enough of her.
I don't get when people go to a job interview and behave in an unprofessional and / or creepy manner. It's not just happened once, it is a regular occurrence. I want to give them advice for the future like, "When I ask you some of your hobbies and you answer 'sex,' you're not going to get hired. Stop being a creep-face. Good luck in the future"
"It is not length of life, but depth of life." ~ Ralph Waldo Emerson