issue of misunderstanding

if a girl is attracted to a guy, 

then she is too shy to show him that she likes him, 

so guy think girl is not attracted to him and guy doesn't try to get date with girl 

and girl become upset

but if a girl is not attracted to a guy, 

then she is brave enough to be nice to him 

and then that guy think she likes him and tries to get a date with her, which she doesn't want, 

so girl feel embarrassed 

and guy feel embarrassed 

showing attration by using facial gesture or body gesture or body language