Asexual

I'm not sure if I'm fit to answer this. I'm demisexual, which is considered to be on the asexual spectrum.

The answer for me is no. I smile awkwardly at everyone. I can tell when someone is traditionally attractive but I just feel nothing. I become nervous if it seems like they're up to something or are emotionally unstable or they have a lot of power over me or if I feel that other people are watching my interaction and judging me. Sometimes I get nervous cause I have those intrusive thoughts like "bite their nose, imagine biting their nose!" Similar to when your driving and you think "swerve into incoming traffic!"

I tend to mentally categorize people as cartoon caricatures in my head and there are certain caricatures I tend to like more because they match with caricatures from media. When I meet someone that matches a caricature architype I like, I think that's as close as I come to finding someone attractive without knowing them, but I don't act any differently when around them.

There was one time where I did feel instantly 'attracted' to someone. It was the strangest thing, I saw them and somehow got this intense and assured feeling that they would be an important part of my life. (She's my SO of 12 years now.) I didn't smile awkwardly (more than usual) at her or feel nervous. I just spoke to her as normal and then 2 years later I told her that I believe we would make a good couple due to several factors like political beliefs. It was not very romantic in hindsight. More like a scientific conjecture lol.

I hope that meandering ramble helps answer your question.