Send a text message to my ex saying that I'll change my number and don't need to contact again. He said, whatever, as long as you are comfortable. I wish you happiness.

This is what everyone will experience; So don't care too much about the past, since it is put down, it is better for two people not to contact; As long as we get along well in the future; If you have been entangled in the shadow, it will make the other party very hard; Because you always have to face a new life; It must be good for you.