When a woman is close to, the same height or taller than her husband or boy friend - she will very often stop wearing high heels and wear shoes with low heels or even flats. This is very prevalent nonverbal early in the relationship. She does this for several reasons - to make him feel more masculine - and to make herself feel more feminine. In addition, particularly if he is shorter than average - she does not want to remind him of his short stature (super models, Carla Bruni and Nicolas Sarkozy excluded). Thus when the opposite occurs - and a woman begins to wear high heels significantly more often (and the man is short in either a relative or absolute sense), especially if she deliberately did not do so early in the relationship, this can be a strong warning signal of a drifting apart in the relationship or even an affair (a notable exception here is for a job which dictates a change in professional attire). One obvious reason for this body language-shoe change is the desire to be attractive to other potential partners. It is just as common however, that this is a symptom of a "turning off" or "dialing down" of empathy for their soon to be ex-boyfriend or ex-husband. Empathy is strongly related to, and proportional to love.