1.Sorry I like you as a Friend/Brother
This is the most common reason girls give when they friendzone a guy this is because either she is not attracted towards you or she thinks you as a friend or brother only.
2.I have a Boyfriend
Girls would say they have a boyfriend just because she is not interested. even though she doesn’t have a boyfriend she would say this just because she didn’t to reject you directly.
But this is not always the sometime she may really have a boyfriend.
3.I like someone else
This were the reasons girls give when they friendzone a guy.
But here is the post on how to get out of the friendzone.
Click on the image below to know how to get out of the friendzone