What is my ex doing and why? :( ?

We brokeup just 5 DAYS ago. And this is our brokeup for second time. After our first brokeup he tweeeted things and wrote a lot of things about us and kind of this... I couldn't forget him.
And now, it has been just 5 days and he made his whatsapp status "same mistake twice"
I thought he did it because this is our second brokeup. but,
Why is he doing this? Please help.
What is my ex doing and why? :( ?
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