Re: British Pakistani girls marrying Pakistani guys
i assume OP’s major concern is not on the clothes remark he made but on why he made that and truly so since OP was not officially engaged with him and her dad was present there too.
on the dressing thing, OP also mentioned that she mainly wears shalwar kameez and belongs to a conservative family herself, then i don’t think this conservative mindset thing would be a source of clash between them since both belong to conservative families apparently.
and anyone feeling uncomfortable with wives wearing western clothes does not make them bad or wrong as this is a matter of personal preference but what makes this wrong is their wish to impose the certain dress code for their wives.
the mature way for the guys is that they should clarify this thing before marriage if it is that much important to them and tie the knot with like-minded girls instead of trying to impose it on the girl once she has become their fiance or wife.