Should I break up with him?

So around 3 weeks ago, I got my first boyfriend, I've liked him for ages and was always wishing he'd ask me out, this was mostly before I started properly questioning my sexuality.

Miraculously, he liked me too and we started going out during summer camp. I was always very uncomfortable with him and calling him my 'boyfriend', it just didn't feel right. I did although enjoy spending time with him (talking) because he really listens to me and doesn't judge me but I still couldn't stop that feeling of just wrongness and it really made me question myself.

I've been on holiday for 2 weeks and haven't seen or spoken to him since camp but we are going back to school soon in less that a week so I'll have to face him then.

During my vacation, at first I accepted that we were going out and I really liked that idea but over time, I started to really think and it's just gotten very confusing. Every since I've accepted my bisexuality, my interest in girls has grown a lot while boys have sunk, this was to the point where I actually thought that maybe I was lesbian. I feel like my real desire is to be with a girl and have a girlfriend but to do that I'd have to break up with my boyfriend and I don't know if I can but I don't know if I like him enough to stay in a relationship with him especially with how I feel around him. I at the same time really want a girlfriend but there is only like a 5 percent chance that I'm going to actually find aother bi or lesbian girl AND be attracted to her AND she be to me. There are only 4 other openly bi or gay girls at my school and two are dating each other!

I feel really messed up and I don't know if I want to break up with him. He's so cute and stuff but I want a girl but I probably won't get one but then atleast I'll be free. I feel so uncomfortable and wrong when I say "oh he's my boyfriend" but I feel much more at home with saying I have a girlfriend which makes me think maybe im a homoromantic bisexual? But i don't know. It is all so confusing.