Crush flirts with guy and ignore me in front of me?

So hear me out and bear with me as this might be long. During last November, I confessed to her via whatsapp and we known each other for 2 years. Then, this January, I've been trying to avoid her as much as I can but she shoots those glances at me everyday till today. She even try to get my attention by teasing her friend or talking loudly. But this evening, as the title says it, she flirts in front of me. At this point, I am confused about whether she is playing with me or she is showing me that she likes me as a friend. Please help! It's open for both genders, all opinions and advice are appreciated and respected. Thanks for your time!
Updates
+1 y
We still text over the phone like once a week (which I know is really less and I mostly start the conversation) but talks to everyone except me in the class. She isn't the outgoing and confident type so I think she might be nervous to text me.
Updates
+1 y
I don't know if talking to my female friends means talking or vice-versa but whenever she talks with another guy and enjoyed his company, I feel a little bit jealous. When I talk to my female friends, same thing except that I try to fake my smile and laugh, she seemed to be staring at me with no emotion whatsoever. What does that mean/.
Crush flirts with guy and ignore me in front of me?
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