Guys, What makes a guy do this?

I split from my ex 5m ago and my friend told me that he was going on sm posting pics with random girls and “partying hard”. I thought he would’ve been past all that now so I had a look and could see she was right. But not just that...

I am obsessed with Minnie Mouse (she’s awesome 😄) and he used to draw me cute little pictures of her and was very good at it. Well he just posted a picture of a Minnie Mouse that he had drawn for some other girl! I don’t know if it was intentionally put up to try and hurt me or whether he’s just a complete idiot.

Why would he do that?

want some guy’s thoughts please
Guys, What makes a guy do this?
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