What should i do about my friend?

Hi, okay so i have 2 good friends. One of them is a lot like me and we've been best friends for 6years. There is this other girl who ive gradually started to like, and my best friend like her a lot now too. but the girl i dont really like is pretty wealthy. But she doesnt have many friends. And she is kinda stuck up. but my other friend cant seem to realize that (OKAY THIS IS GETTING CONFUSING lets call my bff Thing one and the other THing 2) OKAY so thing 1 doesnt seem to see that thing 2 is fighting me against her! they just did a duet for this big concert thing and she was like all smug about it to me. And thing 1 just found out her bf wanted to break up with her so she broke up with him. and now shes all Hehhe i want to go out with the guy Lizzard (ME) thinks is super cute! But My point coming across, is Thing two really doesnt seem to like me and if Thing one is now really good friends with Thing two, i cant be her friend cuz i cant stand it. SO how should i deal with Thing two? I've already tried talking to Thing one about it. she doesnt understand. Thank you so much for your input. i know it sounds really stupid, but im just really pissed off and cant seem to discribe it anybetter.