If a girl tries to make you jealous, is that a sign of worse things to come?

Yeahhbro
Well there is this girl who I am sure is trying to make me jealous make with her friend or well I don't know what the hell she is doing.

She seemed interested in me, but I know she wants to make make me jealous with some guy who I don't think its her bf, or else she wouldn't act that way. Well I was trying to talk to her I got the cold shouldered and then she threw herself to the guy hug him tightly (the guy looked surprised) I know she wanted to get me jealous.

What do you think? Is she dating material? I don't want to screw around.
If a girl tries to make you jealous, is that a sign of worse things to come?
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