I sent a message to a girl. Before, the relationship was relatively average, and I haven't contacted and chatted for several years. I sent: "Hello". Why didn't she reply?

The reason why she didn't reply to you. I think your previous relationship was normal. I haven't heard from you in years. You suddenly contact each other and send a message to say hello. The other person may feel that there is nothing to talk about with you. It is also possible that the other party is married and married. I don't want to make any more trouble. Contact with others. After all, you once had a very ordinary relationship.