Don't know what I'm doing

I feel kinda nervous just to post here but here goes,

I've been with my boyfriend for almost 6 years now. We're obviously really close, but at some point I realized I can't help looking at women. I'm only 22 so we started dating when I was just 17 and he was my first serious boyfriend. He gets me and I feel like I can be myself around him, but I also can't see my future with him. He's hinted at having me move in with him and I know that I can't because I just don't feel the same way for him as he does for me. Recently we've had a serious convo because he said I was distant lately, he says he'd do anything to make this work. But I can never say what I want when I get emotional and I don't know how to tell someone that means that much to me and that cares that much about me that I don't want this..

I have a huge crush on this girl I play sports with. I've had it for so long.. For a while we became really close friends, but she's always been on and off with boyfriends. Somehow I feel we have a deeper connection though. We kissed once, sort of on a dare and I was really drunk and may have slipped her the tongue? But we never talked about it after. I've slept over at her place, and we shared her bed.. but nothings happened. Whenever we'd go to tournaments it was just assumed we'd share a bed. So last year at a tournament we got super drunk and next morning all hungover I was just lying on her shoulder and this other girl made a comment like "that's really gay" I'm not a touchy feely person at all but I just feel comfortable with her. She's very open with women, I remember going out one night wiht my bf and even he asked me if she was gay. I said no but in my head was like (!??!?!@#) I'd do anything for her and it's super obvious.. Recently I went out for her birthday and we had so much fun together, I just can't stop thinking about her, but know that it would never work out even if I did break off with my bf..

I don't know if I'm a lesbian or bi or whatever but I know I want more than friendship with her.