I haven't been in touch for over a year. After breaking up, I sent her a message on her birthday yesterday. Happy birthday. She didn't reply, but she forgot me. Still a little surprised. .

You two broke up more than a year ago, and there was no interaction before, and the other party didn't reply. In this case, it is very likely that the other person has started a new life and doesn't want to talk to you at all, and there is no need to keep in touch with you. It's been a long time since you broke up. Why should the other person remember you? In fact, the landlord should not disturb each other's lives. Go start your own life. In real life, if a couple breaks up, it is actually very difficult to remain friends. You will have a girlfriend, and the other person will have a new boyfriend, so you won't contact. Not disturbing is to leave room for both sides.