For clarification I'm a boy and my friend is a girl.

We've been best friends for about 7 years now and are always honest to each other, even when it's harsh. We were talking about prom and she asked if I was going to ask her. I asked her if she wanted me to and she said yes. My friend has never been asked to a dance throughtout all of high school but she doesn't even want to go to prom that badly. She was only going because her mother wanted her to. I told her I didn't think she would mix well with the group I was going with because a lot of the people in my group don't like her. I also said I was planning on asking someone else. She told me she *really* wanted to go with me and I told her I'd think about it. 

A couple days later I ask a different girl to prom without telling my friend. My friend texted me saying that I was she felt like I was embarrassed by her and that I ignore her when I'm with other people. She said she doesn't like being the better friend and that I don't do as much for her as she does for me. She now asked some else to prom and won't talk to me. AITA?