I want to chase a girl, buy her breakfast, know that I like her, and keep texting to say thank you. What should I do? .

There are only two possibilities to send a text message saying thank you. First, she knows that you like her and have some affection for you, so she took the initiative to find her, made it clear that you like her and asked her if she would like to associate with you. If time is long, her feelings will fade.

Second, she knows that you like her, but she doesn't want to break your heart and is embarrassed to refuse your kindness to her.

So I suggest you choose one.

Confess when you buy her breakfast next time.