Both, neither, and all of them. And I've dated (or at least fooled around with) people from pretty much every gender or sexual identity too. (bi girl, lesbian, straight male, bi male, gay male, male bodied CD, female bodied gender queer, and a MtF) I guess that would make me pansexual.
Lately though, I've found myself mostly attracted to more masculine people, and male identified over female identified. Makeup, high heels and dresses are kind of a turn off for me (with very few exceptions).
If you see someone your attracted to, go for it. Try not to get caught up with wondering if dating someone will make you gay, or straight, or an alien, and be with whoever makes you happy, and feel safe and comfortable with being you.