Introduce your girlfriend's message.

I am writing to you. I think you are surprised, so I will write you an English letter. Are you surprised?

I have some scratches to tell you. I like a girl. She is beautiful and quiet. You can add a description of your girlfriend's appearance, but don't be too explicit. When I met her, I felt mine.

The heart beats faster. Do you know that?/You know what? Maybe it's love at first sight. Are you very angry with me now? Do you think I've been cheating you?

Don't be so angry, it's bad for your health. I'm not kidding, that girl is you, my xxx.

your

xxx

Actually, I'm curious why you don't write it yourself. . . . Please don't mind if there are grammatical mistakes. That's all.