If a girl doesn't like you, will she text you back? If so, what does it mean? She said at first that she didn't like me.

If a girl doesn't like you, she will treat you as an ordinary friend. As for text messages, polite people will reply, so she can't judge by them. She may be insincere when she says she doesn't like you, and you know that some girls are shy in front of the people they like. But it should be examined according to the actual situation.