Why do she want to make me jealous?

Power. Pure and and simple.
You indicated in a previous conversation that she knows you like her. With her not feeling the same way, she knows she has power over you. It feels good to know somebody is in to you, and every reaction you give out to her receiving male attention, fuels that good feeling. Even if it is hurting you.
Your best response is to show no reaction whatsoever when she hugs other guys. She will soon lose interest in teasing you.
Or better yet, get with another girl. That will flatten her power trip.
Opinion
1Opinion
she wants you to give her more attention
When I give her attention, she ignores me.
why you irritated then?
Because I like her, and she knows I like her
maybe because she knows about this unspoken truth she wants to make it spoken. Maybe she's trying to force out a love confession out of you. Or maybe she isn't as sure of it as you think she is and it's her way to testing her theory. Or she knows and playing around with you. All of the above options are viable.
She likes you.
Superb Opinion