My friend is trying to be like me

Ok, so when you have a best friend aren't you supposed to like the same things, right? But you guys also have differences. My best friend isn't like dat. She tries to like the same things as me, and kinda tries to be like me. I don't wanna fully say she's tryna be just like me. But it's pretty obvious she is. I don't wanna tell her anything cuz I'm scared shes gonna get embarresed and like never talk to me ever again.