I like a girl, but we don't know each other. I only have her phone number, nothing else! I want to text her, but I don't know what to say.

She also sends messages to you, and she and he know each other. Since she chose him, it shows that she loves him more and doesn't know you well enough.

And loving someone is not judged by her beauty or not. As long as you really love her, wait for her. If you think it's not feasible, you can either give her up, because she has made a clear decision between you two. I hope you take her seriously and don't let her get hurt!

When she notices that you are better than him, she will gradually fall in love with you. As long as you persist, you will succeed!