Can't stop staring at them, heart beats faster, groin responses, butterflies, and just pure awesomeness.
It's weird, it's like your paralyzed and unable to move when you really aren't, you feel weird and funny in your stomach, get flustered, your heart beats faster etc; it's a really strange but "nice" experience.
I get an awkward and weird yet pleasuring sensation down there, my stomach flutters like mad, and I can't get my eyes off them It's like--- it's another world when I see them
Tingling feeling down there and you fantasize a lot But I'm with you, I'm rarely sexually attracted either
Staring consciously and unconsciously... then later on, I imagine kissing them and yeah~ that feeling down there~ like my undies are gonna fall off
Basically just seeing that person turns you on, gets you flustered and makes you want to go for them. Sexual attraction in my case tends to be very masculine, aggressive, and impulsive initially and then it might turn into something softer or more delicate and romantic once that initial impulse passes.
There's this pull towards them, fantasizing about being with them physically/sexually, this desire to be touched by them. I agree maybe some arousal as well when you think about being with them, but not necessarily 100% of the time. And that arousal is coupled with desire/a pull towards them and directed towards them rather than just your body reacting in its own way. Arousal is a funny thing sometimes, and different for everyone. I'm basing this on a girl I was really attracted to, because I don't feel sexual attraction that often towards people in my life. There's this attraction to their bodies as well in a physical sense and in a "I'd want to be with you that way" rather than a "you look good, you look nice" kind of way. So it goes further than the appreciation, there's actual desire. And also if you have the chance to be with them sexually, you would take it and you would want it. That's different and takes it further from fantasy, there's an actual want for it in real life. Honestly I'm not 100% sure- like I said I don't actually experience it that often, but here's my two cents and my minimal insight. Good luck!