<human>: Long story short: so I [18m] like this girl [20f] ( lets call her Sara) and I am pretty certain she likes me aswell. We are not an "official couple" but more like friends with benefits ( we have been FWB for a about 2 months.

 Today I was at the cinema with a couple of my friends and I see there's a girl sitting next to me. I decide I should send a text to Sara which said "There's a good-looking girl sitting next to me, should I try hitting on her? ;)" Note that she has sent text's like that too me as a joke too, and she always found it funny. So naturally being the idiot I am, I decided to send the text to her since i thought she would not take it seriously at all, But she did.

She is now really pissed at me and won't talk to me at all. I have tried calling her texting her etc, but instead she ignores me.I hate seeing her upset/angry, but I just don't get why she got mad at me when she has done the excact same thing to me before. Am I being a douche here or she just over-reacting?. What should I do to make her feel better?

Can you condense the text into a few key points?
<bot>: Sent a text to my FWB saying I wanted to date a random girl i saw, meant it as a joke but she took it seriously. Now I look like a douche to her.