How to send a text message to your first girlfriend who hasn't been in touch for a long time?

I haven't heard from you for a long time. How have you been? She might answer: fine, and you? If you want to save your feelings, you can say: I'm fine, but I miss the days when we were together. If you can, will you please give me another chance? If you just want to be friends with him or say hello to him, you can say: I'm fine, I haven't contacted for a long time, I want you to have a good time, and finally I wish you happiness.