Are most guys shy about sex?

Basically I’m really open about sex I enjoy talking about it a lot I’m always thinking about it and when I meet a guy Im interested will often talk about sex with them but for some reason they always get shocked and say they’ve never met a girl like me who’s so open and confident about it. They seem to really enjoy listening to me talking about what I like and what I’m going to do to them but they get shy when it comes to taking about stuff they like or want to do because I’ll think their weird or a freak?. I thought all men was supposed to be really confident about this kind of stuff and open but like I’ve only had 1 guy who’s been all up for it the rest have took a long time to open up. Is this weird