Why Would He Get Jealous?

If a guy tells you there is no emotion between you, no feelings, he doesn't care about you, you just had sex, why would he act like a jealous ex boyfriend and get into it with another guy about you?

When I confront this guy about the things he said to another guy about me, he flips the script on me and turns the situation onto me and goes back to being dismissive, cold and unconcerned...What am I missing here with this guy?
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+1 y
Thing is, I hear all of the theories and they all register, but he's hiding his emotions extremely well. He even blocked me after we got into an argument on Facebook, so I mean isn't that like a virtual middle finger!
Why Would He Get Jealous?
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