What do you mean by texting your ex and not returning it?

I didn't reply to my predecessor's text message, mostly because the other party didn't want to contact again. After all, they are separated, so everything is fine.

Of course, it may also be that the other party is busy with work or doing his own thing and didn't see the information.

There is also an extreme situation, which may be that the other party has deleted and blacked out his predecessor, and the short message was intercepted and he could not receive the message.