Why would an ex delete your message on Telegram, so you can also see it has been deleted?

When an ex deletes your telegram message in a way that you can also see he has deleted it, what does it mean? Why would he not just ignore it, but also delete it? Like it was just a message with an apology and telling him I wouldn't contact him ever again.
Why would an ex delete your message on Telegram, so you can also see it has been deleted?
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