Is it normal that i have never experienced a crush?

Hey guys,
So recently I have been thinking that it is really weird that I have never crushed on a guy. I know that in itself sounds weird but all of my friends are completely boy crazy and to be honest I think they look and sound stupid. I mean I can tell if a guy is hot and I eventually want to get married and have kids but I have just never experienced a crush for a guy or anything more than a small amount of attraction. I want to date and in my head I see myself dating guys but I get really nervous around any guy and then I get fed up with everything and quit. Am I weird for being like that? I also think I would first have to have a really deep connection and friendship with a guy before I dated him but then again I don't even know what it feels like to be attracted to someone to the point of wanting to be with them. Any advice would be great and much appreciated!