no you're probably just interested in cats or some shit i wouldn't be too worried

maybe you're just curious? sometimes, especially at a young age, sexual maturity is achieved expressly through experimentation.
i wouldn't worry about it, just sit back and enjoy the ride, i guess.

No, it does not make you bisexual or lesbian to be 'turned-on' or interested in woman online. The only way you could possibly be one of the two, is if you have any interaction or relation in real life, as online interaction is not nearly effected on your real life status but it also means you could be in the closet, depends how you feel.

Well I don't think you are IMO but what do I know? you can't pretend to be something you are.. Or maybe you can I dunno. You cant tell from being turned on when chatting. People do crazy stuff when turned on. No matter what sexual orientation

There is no way of knowing whether or not you like women unless you have had some experience with women outside of the internet.

It means you're open minded enough to love both guys and girls. I hate labels, if I had to label myself I'd have to say that I was "bi" but I don't feel like I am. I'm straight but if it's a hot guy, I could be keen to do stuff. That doesn't mean that I'm gay like some people think or that I even like hairy man legs as much as I like perky breasts. It just means i'm open to new experiences and it sounds like you are too.

You're just curious. Also there might be something to do with knowing what a woman wants. Gulys do this kinda stuff a lot.
Just have fun with it