I'm tired of the guys whining about friendzone, so i'm going to tell the basic rules to never get into the friendzone.
1.- Treat the girl different to how everybody treats her. This is the basic rule, why ? because if a girl is hot as hell, there are plenty guys who treat her like a queen, actually most of the guys she knows may treat her right. So if you treat her like she was the ugliest girl alive she will think: what's the matter with this guy ? why he doesn't treats me the way everybody does ? This also works if the girl is not as popular and everybody is an asshole to her, if you are a nice guy with her, she may fall for you. So, if she is a hot popular girl, treat her like ****, if she is not a hot popular girl (and everybody treats her like ****) be nice to her.
2.-From the beginning let her know you want her, not by telling her you want her but acting as if you want her. This is very important and its also the key for avoiding the friendzone.
3.- Never tell a pretty girl she is pretty, never tell an ugly girl she is ugly.
4.- Your image does matter ! From where i am there is a proverb that says: as they see you, they treat you. If you are a fatty one sign up a gym, be clean, you are not going to die if you take a bath twice a day, brush your teeth and everything.
5.- Girls just wanna have fun. No girl wants to hear a monologue about history, linux vs windows vs apple, religion, politics, economics, video games(she may want if she is a gamer girl, but a conversation is very different from a monologue). You are not more intelligent than everybody for talking about this topics.
6.- Be friendly with everybody, you don't know who will introduce you to a special girl
7.- Do something. Your days are boring as hell ? Play sports, join a club, play an musical instrument, study a foreing language. Stay out of your house. The more you live the more interesting your life gets, the more stories you have to tell the more girls will find you interesting.
8.- And last but not least. Once in the friendzone... it's over. Trying to get the girl is like trying to paint a chair green by farting on it. A few guys may get out of the friendzone by talking, but most of us rot inside it until the girl doesn't talks to us anymore. Cut it off, while you are wasting energy on that girl, you let pass a dozen worthy girls. Aaaand, if she sees you with another girl, she may fall for you(95% sure of this).
I hope to help those who need it.