Personally, I'd advise not agonizing too much over what your specific orientation is. If you think you might be interested in girls (which it sounds like), go for it! Same for boys. You sound like you're interested in people of various genders. Some words for that include bisexual, pansexual, polysexual, queer, and others if any of those sound fitting for you feel free to use them, but you don't need a specific term for what you are unless you want one. If at any point that changes, that doesn't make what you identified as before any less valid. The words we use for different sexualities don't mean we have to behave in a certain, fixed way, forever.

I spent a long time trying to figure out what my sexuality was, but up until I started actually dating people, it was hard for me to get a real sense of things. If you go out with a girl and realize later on that you're not "into girls" there's nothing wrong with that! And you probably will have had a fun date while figuring that out. Experimenting is awesome. I totally recommend opening yourself up to possibilities, going out there, and seeing what works for you.

My suggestion for who to date is: someone you like.