ETA: On the broader subject of attraction, I've often lamented the fact that I can't decide who I'm attracted to.

Is it a matter of being a little attracted to many people but you can't pick between them? Or that you know you are attracted to people but don't realise it at the time? Something else?

This is a whole different world to me. I feel it as, well, damn near a literal pull. My body would move physically closer to them if I did not hold it pack. That said there were times long in the past (I hope) that I really didn't notice that I was attracted to someone until months after when I deduced it from my behavioural patterns.

Have you tried going and making out with the people you may be attracted to? Usually a sure fire way to tell. This is partially, shall we say, "tongue in cheek".