In general, female fans who started to wear "i love john" buttons usually preferred

They are usually preferred to be those of quiet, introspective and spiritual type as they try to express their feelings with having to show it rather than having it to be spoken out loud such as having to wear the buttons of which they love.

it´s related to his charming character.

beauty is not everything, although we can joke that girls only care about the physical or material aspect, the truth is that a real woman looks at more important things, besides intelligence and personality, there are other attitudes that make irresistible to men who are 'unattractive'.

for example develop your sense of humor.