Confused about my sexuality? Help :(

So for a long time I have been wondering about my sexual orientation and recently its been getting me down.
​I am a fifteen year old virgin and what some may call an 'amateur' in the love department!
​Basically, when I was younger, I never experienced romantic feelings towards anyone (same or opposite sex). However I could always appreciate the beauty of women, and when I was about 10, I used to find myself drawn to the idea (prepare yourself) of female carpenters? I used to find them pretty attractive - which lead to my first thoughts out of the hetero norm.
​ 
​I never really thought about my sexuality until I realised that I had never had feelings for men. I was about eleven when I thought 'I must be a lesbian'
​When I turned 13, I had my first crush on a boy. I really, really liked him, and it made me forget about my homosexual ponderings. After that I assumed I was straight and no more was said.
​Two years on, and I am back to square one. I've never actually had specific FEELINGS for a girl, but I am very open minded about gay relationships and wonder whether I would be happy in a same sex relationship. 
​I never find men sexually attractive. I think they are beautiful and nothing more. The idea of physical sex repulses me, but i am fine with the thought of being intimate with both genders. Am I bi? Pansexual? Or just curious? 
 
​Please help, I am so very confused :( what should I do?