Guy's Behavior

If a guy tells me something and I seem jealous (facial expression) why would he repeat it?

he was talking to me about one of his other clients and I have a crush on him, but one thing about me is i can’t control my facial expression when it comes to jealously, as much as I tried to, he seen my reaction then repeated himself and emphasised on “my other client (her name)” and taken a step closer to me and watched my expression….
i feel like he was

- trying to see if I was jealous or if he was just imaging it

- trying to let make it clear he knows I’m attracted to him and he has other clients and that’s not something to be jealous of

If a guy tells me something and I seem jealous (facial expression) why would he repeat it?
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