When my girlfriend said this, what did it mean?

Tells me that I turned her on friday kissing her neck
Is being turned on and horny the same thing?
cause I dont want to think something else and her think something differeant

Yup, if someone says they're turned on it means they got aroused... horny. She liked it a lot. We all do

YES!!

Yeah, being turned on and horny are the same things. She's probably telling you she wants to go to the next level, but don't just go ahead and do that. Talk to her about it.

Yeah it means the same thing, but dont assume it means she is ready for anything else... talk to her about it...

it means she really liked what you did
turned on and horny are a little different
turned on means what you did aroused her
horny means that she would want to have sex!
so dont assume it means she wants to take it to the next level
youll have to ask her
but it sounds like she wants you to do it more in the future because she enjoys it!