Do i love her or do i just like her looks?

i am 16 and shes 16 we known each other since gr3. We are not dating. However, we do kiss each other on the lips because of our long friendship, we are pratically like brothers and sisters. We took a shower together once bc we were curious what we look like nude (dont know if u call this love but i think there must be something that allowed her to be naked front of me) we were only 11 or 12 at the time. Now we are in our teens and she looks abs amazing, pretty, beautiful , nice, nice body and etc. She looks so perfect i admire her so much. Do i have a feeling for her or i do i just like her looks. I feel like im crying (just a feeling dunt know if its sadness or happiness) when i see her. I daydream too and she have to slap me to snap me out off it. To me she looks prettier than anycelebirty or any other women on earth.