<human>: Can you give me the gist of the text in a nutshell?

Ok so prom is coming up and I get it, everyone is probably rolling their eyes and thinking "it's just prom, how serious could this problem be? Those of you who are sticking through this post, thanks. So I'm not currently in a relationship and I like to keep my options open. There's this one girl in particular that I really really like who we will call "M". I have thought a lot about asking "M" to prom but there's this other girl who is just my friend who we will call "S". Well S' best friend texted me the other day and essentially said things like "I don't want my best friend to not have a date to Prom!" so of course it ended up being a plot for her to guilt trip me into taking S. She got pretty forceful, in fact, and I could sense of tinge of anger in her diction. There was a significant possibility of me taking S in the first place, but her best friend harassing me is pushing me away. Meanwhile there's M, the girl I really like, but I know that if I ask her, S will be crushed and her best friend will hate me blah blah blah. I think it's just a load of nonsense that it even has to be this big of a deal in the first place. It's just a dance. But really, what gives S' best friend the right to pressure me into making a decision for the sake of S' enjoyment, especially when it's at the expense of limiting my own freedom to decide?

Just nonsense.

Any advice? Anything at all? Maybe just write what you think about the situation? Thanks.
<bot>: need help choosing prom date between two girls. I really like one girl and the other girl has a best friend that is pressuring me into what could be the wrong decision.