Is it bad..?

Halle
I'm 13 I have a friend that wants me to give a bj and she said it was fun. I seriously never have giving a bj or sex in part of my mind I mean I think about it, but I never really think about having it this young. She's my bestfriend, but she gotten me in somewhat of trouble an I tried helping her with her grades but she never cares all she thinks about is boys and she always wants to hangout with them and do sexual things. She is always saying just do it you will be fine. Should I or should I not..?