Realistically though, anon friend, about coming out as aromantic? Be sure you can define aromantic in a clear, concise way, on the spot. Try to have examples or sources. Because even people who understand and accept aromantics will have questions. About what it is, what it means to you, and how you know you are.
Some people will not accept it. They won't understand or they'll think you're being a 'special snowflake.' Forget those people. Put their names on a registry in your head of People Never To Talk To About The Thing, and then move on. You're too rad and awesome to spend your time thinking about people who are being deliberately obtuse.
I don't think you need to have a big coming out party. For me it's never been like that. But rather it's been being out about it, being upfront and confident about it. About being firm in your belief in it, not letting people try to convince you out of it.
I've never once been bullied about it, and frankly I doubt I ever will. Aromantics don't really deal with that behavior in my experience and observation. But we do deal with disbelief, confusion, and disappointment. And that will suck. A lot. But educate people. Don't get upset when people don't know. (most people don't even recognize bisexuality as a thing, they've never even heard of aromanticism.) Just explain, explain a different way, find another way to explain, and be an example that aromantic doesn't mean 'devoid of feelings' or 'boring.'
But most of all, this isn't a sad thing, it's just a thing. And it's your thing. Okay?
Have a good day, and be good to yourself.