You sound just like I used to lol
First off, I am bi. Hopefully I can answer this helpfully because its actually been pretty recent that I figured that out.
I thought I was only interested in men until 8th grade. I was 13 (I'm 17 now) and liked my best friend(a girl). Yeah that was a strange year...lol

I know this isn't what you want to hear but don't put too much pressure on trying to label yourself as bi, gay, straight, or anything else. That will just stress you out and make you more confused. Just try to be patient, you'll figure it out.

Now to actually answer your question. (lol sorry, I'm being random today)
I can't tell you if you are or aren't bi, only you can know that. But, you said you like men and women, so maybe you are.
You don't have to do anything sexual with anyone to know if you like men and/or women. You may have heard "well how do you know youre gay or bi if you havent?" No one ever asks "well how do you know you're straight?" It's exactly the same. You just know. So basically just don't worry about it too much, you'll figure it out. And whatever you are (gay, bi, straight, etc.) don't be ashamed of it!
Just be yourself. Good luck.