Why does my ex say how good he was to me?

We split up a while ago. But my ex keeps saying how good he was to me, how he did so much for me and keeps asking why I threw it away erc. I left him because we kept arguing and were not right for eachother. Why does he keep saying how much he did etc? And why does he ask why I threw it away?
Why does my ex say how good he was to me?
Post Opinion