(We had a horrible breakup 6 months ago, he was on drugs till about a month ago)
Why would he act in such a way?
Cause he is a horrible person and wants to make you jealous. Luckily you didn't give him a good reaction being all mad and awkward cause that's what he wants. He is clearly a dick move on to better things.
He's trying to make you jealous to manipulate you and get in your head. Apathy is the best way to counter this behavior, since the entire act is about getting attention.
He is fucking with your mind
He wants to make you jealous because then it validates that you still have feelings for him.
Best thing you can do is ignore him.
Mind fucking people can be fun but very manipulative. Don't let it get to you.
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