Is it jealousy or possessiveness?

We aren't dating but he wants me to be monogamous. He keeps screaming 'Your body belongs to me only' though we never had sex. And he keeps worried if I go out alone, doesn't let me drink or smoke and doesn't like me talking to other boys. When he came to know I kissed one of my crush, he was very angry and upset. And he cut off all ties.

The question is, he ain't boyfriend or so but why is he doing so? Is this possessiveness or jealousy?

Is it jealousy or possessiveness?
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