My crush flirts with everyone?

The girl I "like" seems to flirt with every guy she knows. I thought she liked me wtf? She is in my youth group and showed EVERY sign of liking me. She hugged me sometimes, she slept on my shoulder during a car ride and obviously paid attention to me even though I am a quiet person. We joked around all the time. I played and sang a jack johnson song for her and she totally loved it. Now, on her facebook wall she is "married" to some guy. They flirt on her wall wtf! Am I imagining this cus I'm getting really pissed off. I was going to ask her to prom this weekend
My crush flirts with everyone?
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