How to remind her it was our plan first?

[ABC]

basically me and my best friend love this comedian and always say how me and her are going to see him live when he brings out a tour. then i go on twitter which i never use and see my best friend and her friend (i don't talk to her or like her) talking about him and my best friend said 'i need to see him live like right now' and her friend said 'ooh can we go please?? :$' and then my best friend said 'YES WE MUST!'

Like what? now i'm just like right cool i don't matter any more then... and i have a suspicion that the next few months he'll bring out a tour and she'll end up going with all her other friends or something

i want to bring him up and say what that girl said in a non idiot way and see what she says to me. i remember making a picture of all the people we need to see live and he was on it and it just makes me feel so sh*t when i see things like that. what should i do?

ps if she was to invite her other friend she would have to invite the whole group of them and i would be left out like the whole night...