Is NOBODY wrong in the post ? POST : So I think this story needs a little context. So I like this girl in our high school, she is in the same class as me and we we are very good mates. So over a video call I told her that I liked her and we decided to go on a date. It was a pretty nice date, I had a nice time anyway, and that was that. We had been messaging very often since then at which point I asked her if she wanted to go any further with the 'relationship'. As she had recently came out of a long-term relationship, she said she wasn't quite ready but she liked me too - which I accepted. I left it a little while and we continued messaging and voice calling most days until last night. Where she messaged me and said "sorry for not messaging you I was at the cinema". I received this message at midnight so I thought obviously her parents have been out with her all night or.... She went to the cinema with another guy. I asked her who she went with and she replied with "someone", at which point alarm bells started to ring. I called up some mates to help me out and to find out who this girl that I really like went to the cinema with and after several messages and me getting quite confused and upset about the whole situation we found out that she went out with a guy, from the grade above me. Is it just me or do people think that she should of just told me that she didn't want to take things any further rather than giving me a sense of false hope. And Am I The Asshole for getting upset about the situation?

(I would be able to accept if she told me that she didn't like me and then went on a date but what confused me was that she said she liked me but didn't want to move on yet because of said previous relationship)