No, I'm still exclusively attracted to males. They arouse me and females don't. However, I've never had any objection to vaginas whatsoever. I was always an enthusiastic observer of normal sexual intercourse and over time have come to the firm conclusion that all males should engage in it, without regard to sexual orientation. It's not a change in my patterns of desire, it's the natural consequence of a thoroughgoing devotion to the phallus that arises from my basic sexual orientation.
Similarly, I think what you describe is a change in behaviour. You were clearly attracted to men before, or you would not have tried it with them back then. You are now exploring a potential that you have had all along.