Just tell him exactly that. Say 'sorry, but I'm just not interested in you that way', or something along those lines.
If youre unsure then get one of youre friends or one of his friends to ask him who he likes or if he likes you
tell them you are not interested. if you are friends with them, then tell them that you only see them as a friend.
Just about like that. Just tell him you know he is interested in you, but you are not interested. Thanks, but no thanks.
You don't he either is gay like you and is interested in you or he is straight you can't change sexuality
just write a note
If a guy is interested, he will want to spend time with you, will call you, and will not make you wonder.
Well if you don't like him tell him you're not interested in him, and if you are interested in him tell him you like him back, or you can just ignore him.
You can tell a guy is interested in you if actually says he likes you or wants to go out
tell him your feelings about him
ask him.... scary but simple
You have to be straight forward, honest, and polite.
well you can tell if he starts flirting and then becomes youre boyfriend then moves closer and closer and then pukers.