I'm actually aromantic due to traumatic experiences outside of romantic situations. I grew up (and am still in) an emotionally abusive house. The emotional trauma that has resulted because of the abuse affects all relationships I have (platonic, familial, romantic, etc.). It's hard to explain, but it's not just fear that it comes from, it's just how my brain processes everything I guess. Like, when it comes to being with my friends or anybody, I do too much or am somehow too much or too little and somehow I just get this very sick feeling in my stomach. Really normal things trigger me and it causes a lot of distress because somehow my brain links them to my parents. Romantic relationships involve a lot of vulnerability and a lot of my triggers are directly related to them, so as a result, I have become repulsed to romance.
It's strange, really, I identify as an asexual lesbian solely for the fact that I feel like properly labeling myself as aromantic is kind of letting the trauma win, but I'm not ignoring my repulsion to romance either, just not actively labeling myself as it. One day when the trauma has healed I know I'll be able to fall in love if the situation ever occurs, but right now I can't. It sucks, and it really sucks knowing that I have the chance of falling in love but I just can't, but I'm only in high school and once I'm able to get out of my house things will hopefully take a turn for the better. Besides, not being in relationships isn't that bad. Gives me a chance to focus on other things and not fret about getting a girlfriend.