I did not want reciprocation. There was no interest in dating the person I was romantically attracted to, I just was and that was all.
The first time I experienced romantic attraction that I wanted to have reciprocated, I was 17 and had already been dating the person in question for a few weeks (because things are terrible and confusing that way).
The first time I experienced sexual attraction, I was 18.
I will be 20 in a couple days. I have not experienced sexual attraction in over a year.