asexual?

 I have been having trouble with my identity. For the past two years I have never had an urge to be in an a relationship nor have I wanted to have sex. I have been telling my friends I have crushes on people when I don't, just be cuz at this time (last year of junior high) if I didn't have a crush people would think I'm weird. Am I asexual? I only started thinking about this possibility when my friend asked me I was ever in a relationship/ had a crush when I realized that I never did. EDIT: just want to clarify I just turned 15