New Harvard University Study Reveals the Biological Workings Behind "Love" By Jeezus. H. Christ The winter season tends to bring out the romantic side of couples. Who can resist the warm glow of a fire and the soft embrace of your significant other? During these times a couple may whisper the most important and meaningful words in their relationship, “I love you”. Which brings about the question that has been on scientist’s minds for a long time now, what is love caused by? New breakthroughs in research conducted at Harvard University are bringing us closer to the answer then ever. Dr. Frankenstein (pronounced Fronkensteen) believes his findings will explain it all.