There are so many signs looking back that i was aro -- when I was 10 there was this one boy (and also his friends) who followed me and my friend around and kind of just made our year miserable. I told my parents about it to see if they could do anything to help, and my dad told me that he bet that in a few years I would go on a date with him. I knew he was wrong, but at the time I didn't have the words to explain why I knew he was wrong, so I just had to let it go. I wonder if he even remembers that now.....
A lot of girls around me from a young age were planning their weddings or thinking about who their dream boyfriend was, and I just could not relate at all.
I honestly think that if I knew what aromanticism was when I was around 10 I would have started calling myself aro. A lot of alloromantic people start getting crushes in early elementary school (6-9 years old) and I didn't at all.