The way I've been explaining my orientation to people is to use two objects, place one on the left side and one on the right. One of the objects represents guys as a group, the other is girls. Then I take something straight and place it between them and rotate the object. As I do I explain how as a guy I was oriented toward women, and as my view of myself has changed my orientation followed with it. Now my orientation follows the same basic line it did in the past, but in the opposite direction.
I hesitate to use the word straight for myself, if I had to label it I would call it bi, though I'm not sure how true that actually is. I still find women to be the prettier of the species, but I haven't thought of them sexually in quite a while now. I'd still like to play around/cuddle with some of them but that's as far as my desire seems to go. On the other hand I've begun -noticing- guys, particularly of a certain height/build, though I've started finding attractive qualities in most guys I interact with, which kind of weirds me out. But whatever, just takes some getting used to I guess.
I think my orientation has always been man + woman, but I was confused on where I existed on that spectrum which threw everything off. My orientation towards women was always enjoyable, it never seemed wrong, but now being oriented towards guys while viewing myself as female is so ridiculously right that it's crazy. My whole life is like that now, I never realized just how wrong everything was because I had nothing to compare it to.