I wanna hang out with my friend this saturday, but she has these friends that

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are......odd? well this is how it started -

my friend (quite close) used to be ok. but lately she's changed. she has different tastes in music to the rest of us, and she thought that we didn't "understand" her. i dont know what she meant by that. she says that she's different to all of us and she has different interests. she likes slipknot and stuff like that. so she started hanging around with this other girl whos....how can i put it.... weird. she says she's emo this girl, and she cuts herself and everything. she even shows us. and my friend has started to hang out with her because she "understands" her. but im scared my friend will start becoming emo and will start cutting herself. so another one of my friends asked me to come to the cinema this saturday. i want to , but she is friends with the girl who has changed too, and shes coming. and her emo friend is coming and shes bringin her emo friends. we're going to this place where our school is and if people see me and them together,
then they might think IM emo. all of these people from my year live where we're going so they are gonna see us. they're going to think im a freak by hanging out with the emos. i like my 2 friends that are going, but she says were gonna be hanging ariund that town for a couple of hours and i dont wanna be seen. what do i do?

p.s - SORRY its long but i need help and i dont wanna hurt my friends feelings.
mostly the people that are gonna see me our the boys in the year they always hang out where they live. and they are horrible boys. i just know theyre gonna say somthing the monday after to me and start rumours that im emo. they have somethig against me.
yes but it wont change anything if i tell hr how i feel. thy will still go to the cinema. but i WANT to go its just im cared of anyone else seeing me.
im not anti emo, its just i think there are two types of emo. one is the depressed type who cut themselves, and the other is they like a type of music. i like the peope who like the musi but i dont like the people who cut themselves. and i do care what they think because they say tons of rumours and everyone believes it and theyve been saying horrible stuff to me for about 3 years and they like it when thy have something to say about me
if im only thinking about myself then how come i care about my friend hanging out with that girl? i dont want her to get depressed like the other girl i seriously care about her!!
omg i DONT care what they are !!! im just judgemental over the other people hanging around with them! they cut themselves and they brag about it!
i need advice on what to do , not a lecture please!