I think I/E has a lot to do with it, like Lady_X said. I also think intuitives are less likely to pursue others because some of them are almost content to idealize and dream about people without actually much real connection.
Not to be sexist, but I also think gender might come into this a lot. I am not saying all girls are pursued and all guys pursue, but in my experience the onus of the pursuit does seem to be on the guy more often than not. Maybe it's just where I live, but it seems more acceptable (or at least expected) for guys to be more forward about these things. For example, I am one of the least forward people in the world and despite that I was the one who did the chasing in each instance. That being said I might HAVE to be aggressive because I don't attract girls