You can tell by if they are mean to you. If they don't like you then be nice back one more time and if you are nice and they are still mean then they are mean and will never be nice so avoid them and talk to nice people. you can also tell if they dont like to be near you if they are mean to you be mean to them
you tell someone you like them by your body language.
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Tell someone that you like Emily for example. Then tell the someone why you like Emily, and get out so it's not bottled up inside you. This worked for me when I was afraid to tell the person I liked them.
tell your feelings to her/his friend and let her/him tell to the one you like!
how you tell someone you like them is just to be your self around them and ask and see if you can tell them something and Say it
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if they are rude to you
you ask them out.
No you can not
Just tell him that you like him better as a friend.
Bang em and see if they like it
Write to him, Simple!!