It shouldn't feel like one, specific, objective thing. If you don't experience anything you would or want to label as romantic, then you don't experience anything romantic. It's up to you. No one can know your feelings better than you - even when you're unsure of your feelings. After all, feelings are personal to you.
For some people, maybe. For me, it was a very distinct Other thing.
Do you want to be aro? Do you want to try it out? There's your answer.