basics of attraction

if a girl likes a guy 

then she probably walks in front of him a lot 

so that he will see her 

if a guy looks at a girl a lot 

then he probably likes her 

if he doesn't look at her 

then it could be because he hasn't noticed her 

if a girl likes a guy 

and he likes her 

then she doesn't have to be nervous 

if a guy likes a girl 

and she likes him 

then he doesn't have to be nervous