I feel so stupid for checking on my ex boyfriend social media after break up, why do I still do this?

I broke up with him cuz he wasn't treating me good. It was more like acquaintances than lovers, no love no calls or texts. He was okay with break up n then later insulted me n said he didn't love me thatss why he wasn't making any efforts. Why do i still do this? I know deep down it was the right decision n he wasn't good so why im still checking him out.. its not good. Anyone have any advice for me
I feel so stupid for checking on my ex boyfriend social media after break up, why do I still do this?
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