20 Questions The Science of Love This Valentine's Day kahoot explores the science behind how we feel love by asking questions about the brain, chemicals, hormones, and neurotransmitters. Science_by_Kahoot, 02/09/2018 answers Play Scientifically speaking, which organ in the body is responsible for the feelings of love? heart lungs brain eyes This brain chemical makes someone who is just starting to fall in love feel, "head over heels." dopamine oxytocin vasopressin phenylethylamine Histocompatibility looks at genes that might play a role in attraction by using which sense? smell sight hearing touch … and 17 more awesome questions! Check them out by clicking “Play”.