I think there's something wrong with me?

I don't know if any other girls ever feel like this, or even guys, but sometimes, when I meet a guy that is attracted to me, I am immediately repulsed. I may flirt and I may do some stuff, but that repulsion is always there. I can't escape it. And it's mostly I just don't want anything to do with them physically. Now, the only guys that ive wanted to do physical stuff with, are guys that ive gotten to know for a long time. I only feel an attraction to them, almost like my drive is linked to how emotionally attatched I am to that person. I feel like there's something wrong, not just like I'm only feeling things for guys I like, nothing about this feels normal. I don't think I'm aual, I have a drive, it just only occurs with a few certain guys, guys that I've gotten to know, guys that have gotten to know me, guys that are really close in my heart. I can't be with other guys, guys ive just met, its like if they try and move too fast, and get physical too fast, it disgusts and repulses me from that person. I just want to know what this is, please help.