I think a pretty good way to figure out where you are on the ace/aro spectrum is to, if you find yourself attracted to someone, think about how you’d like to spend your time with them:
Do want to hold their hand? Have sex with them? Kiss them? Talk with them? Play video games? Watch a movie? Cuddle on the couch? Spoon with them?
And additionally, when you’re in a relationship:
What do you do together? What do you want to do together? Do you feel differently about what you’d like to do with them than when you started?
Based on your thoughts and feelings, find the label that works best for you!