Is she jealous of me?

I told this girl about my gym crush, even she goes to same gym.. All of a sudden she started saying that the guy I like notices her.. Earlier when she had no clue about my crush she used to say that the guy looks at me, now she says that he notices her too.. She even said that the reason she's not coming to the gym these days is because she wants the guy to notice me and not her.. She even liked his post on Instagram despite the fact that they've never spoken a word with each other neither have they exchanged names or social media.. She got his Instagram handle through me, even I don't follow that guy because we've barely spoken and it would be so awkward to follow him.. I just stalked his profile and sent it to that girl, she straightaway liked his post.. Why is she doing all this?

Is she jealous of me?
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