Why is my ex’s ex in my social media views?

I used to be romantically involved with a guy between 2018 to 2021 off and on but we still have each other on social media and he always constantly watches my stories on snapchat even though I’ve stopped watching his since being with my current boyfriend. Today I see the girl he was with after I broke up with him was in my views on social media showing her profile. From what I know as of now they aren’t together anymore which is why I don’t understand why she is in my views. I literally haven’t spoke to him since last year.

Why is my ex’s ex in my social media views?
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