How to send a text message to a girl you like?

Let me help you. I have the same experience as you. I have her phone number, but I haven't said a word to her yet. Later, I added her as a school friend and asked for her mobile phone number in person. Don't think that this is a multi-purpose. It's actually a strategy to make her notice your existence. Later, I sent her a text message, which gave me a basis for understanding. I said this, hello, I'm xx. Is this your number? I want to make sure. Otherwise, the opportunity will disappear. Remember to send her a text message every day, or the relationship will cool down. You can ask her out for dinner at some time. This is my experience, for reference only.