consequences

if a female journalist has a job to write an article about sex advice for women in a woman's magazine 

then she might interview a female relationship therapist that works with giving women advice about relationships 

possibly a lot of those women that seek advice from female terapist are not happy with their relationships 

if women are not happy with their relationship 

then those women probably often don't want to have sex with their men 

and those women probably don't want to have anal and oral sex with their men 

so female therapist get impression that a lot of women don't want to have sex often with their men 

and don't want to have anal and oral sex with their men 

other female therapists have probably similar experiences with women 

so female journalist get impression from most female therapists that most women don't want to have sex often with their men 

and don't want to have anal and oral sex with their men 

if some of those women, 

either the female journalist or female therapist or female customers of therapy do want to have sex often with their men 

and do want to have anal and oral sex with their men 

then those women probably think that they are different 

and probably prefer to keep quiet about their preferences 

those events probably influences how female journalists write relationship advice to women in women's magazines 

that's why a situation when a boyfriend wants to end his relationship with his girlfriend because she doesn't want to have anal and oral sex with her boyfriend is considered taboo behaviour of boyfriend 

when in most other situations it's considered rational to end a relationship if boyfriend and girlfriend want different things 

it's not that women necessarily give each other bad advice out of spite, 

it's that women don't see the patterns that influence their actions 

ironically, 

unsatisfactory sex leads to unhappy relationship, 

which leads to less sex, 

and that leads to more unhappy relationship