If you don't like them on your first meeting
If you don't like them on your first meeting
Derrick Coetzee/Flickr
People are more likely to be attracted to someone who didn't find them appealing at first but eventually warmed up to them than someone who always liked them. This was revealed in a 1972 study by Jerome Tognoli and Robert Keisner about the gain-loss theory of attraction.
Participants "accidentally" heard the experimenter describe them in either a positive or negative way. It turned out that participants liked the experimenter far more when they gave them an initially negative rating that later became positive. This shows that people find it more rewarding when they need to win someone over.