If you have recently searched for you are not alone. This particular IELTS Reading passage—often titled "The Language of Love," "Romantic Fiction's Popularity," or "A Timeline of Courtship" —has become infamous among test-takers for its tricky matching of information and True/False/Not Given questions.
Oxytocin is released when people watch horror films. Not Given (The passage mentions oxytocin only in relation to love stories.)