Being asexual doesn't mean you don't have sexual feelings. The definition mentions sexual attraction, not sexual feelings. What I'm trying to say is that asexuals don't necessarily have sexual feelings for people. For instance, people can be "triggered" by things without having those feelings toward people.
Real-life example:
I made some art not too long ago, and I couldn't stop thinking "if I was a boy, I would date him." I was drawing one of my FNF OCs, but the picture was supposed to show only his body pattern. And yet, it gave me those "feelings". What can I say? Some fictional men are more attractive than literally ALL of the real men. But, that's just me, cuz I only like real women. ;w;