How do you know you like her?

That all really depends on how you feel around her. If you think disturbing thouhgts and think about her like that constantly than you surely don't like her. You just think that shes attractive (in these cases don't even try because if she thinks of you in the same way then you will have an empty relationship and it will go no where and you will be miserable.) However, if you don't think about her looks at all or her body but just focus on her personality and or what she stands for, then there is a better chance that you like her