Oh boy.... I've been asked this before and my usual answer is "confused!"

I wouldn't stress about it too much - it's really quite common not to fit into the tiny little restrictive boxes.
I'll objectify both, but don't think I could ever be with a woman. As soon as they become anything more than pixels, I lose interest.
I do enjoy the dynamic that goes with women, but I think that's more how they make me feel about myself. I get to feel like more of a traditional macho-man for a while. Yes, I'm a sleeze

. I'm also not immune to their charms - I've driven some around, moved boxes, done stupid things to impress them, etc - so fair's fair!

It's all in good fun - I'd never lead a woman on, I have no intention of having a relationship with one.
Men on the other hand... heh

. The right man, and I actually find them attractive after I've gotten to know them. Both the people I've fallen hard for have been male. I don't discriminate between trans and cis, I've had crushes on both. It's more about the man himself as a whole. The right man can get under my skin in a way that no woman ever can.
I could only ever be with someone as a man. I don't mind the fact that I am (for all intents and purposes) gay. The further I get in transition, the more comfortable I am with it. I just don't like the image of the drama filled, stereotyped gay "community" and I want no part of it. I'm just a regular guy that happens to like other guys.
I've never been a lesbian, or done any time in the lesbian community. It was just never a fit. Even confused by the above feelings towards women, I was always 100% sure I wasn't a lesbian (during those times I could have sworn I was a straight man... very odd it didn't tip me off to the fact I am trans).
My orientation hasn't changed. In the past I just ignored how I felt about women, and pretended to be a straight female to "get the guy" (which turned out to be a disaster the one and only time it worked... the dynamic was totally wrong). Transition has made me look at the way I see things, and now I'm comfortable enough in myself to accept what may be a little unusual.
I could be gay, I could be bi. It depends how you define the catagories. Don't worry about the labels - just like what you like and get on with it

.