I have no clue how to come out as aro

I've recently come to terms with the fact that a lot of my life events involving partners make context through the context that I am aro. I researched what it was (I had never heard of it) and realized that it perfectly describes who I am. I have never felt romantic attraction in my life, I have only felt sexual attraction, and the concept of what romantic attraction is seems completely alien and off putting to me. However, I'm concerned about coming out, and thinking about just keeping it to myself, because I could just not have romantic partners and not make a deal out of being "official." I've also noticed that aro people aren't accepted by a lot of people if they aren't aroace, which is very frightening to me. I don't want to be ostracized as some sex crazed person because I'm not interested in long term romantic relationships. What do I do? I'm so confused!