Lurn how to write a sentence?! "how do you make a girl jealous of me?" not what you have put.
make her jealous
You answered it yourself. He got with the other girl to make you jealous. It doesn't make a whole lot of sense.
A girl who is trying to make you jealous will only flirt with another guy in front of you. Anything more than just flirting means she's not doing it just to make you jealous.
Just ask her if she likes you, but if you are to shy then try try to make her jealous if she gets jealous she's all yours.
They're obviously trying to make the other girl jealous.
He either is trying to make you jealous or he doesn't want you to be jealous
Most likely
Mainly because they're jealous! :)
try to woo her
because she is simply jealous!
Go on with life... or make her jealous and date another girl.
Try playing 'hard to get' or make her jealous by pretending interest in another girl.