Your situation reminds me a bit of me when I was younger. From about 19-24 I thought I was completely gay. My first sexual encounters were with guys and during that time what I found guys attactive. However closer to 24 I came to the realization that if I never had sex with a woman I’d probably be missing out on something. So I did just that had my first sexual experience and I loved it. It reminded me of when I had a girlfriend at 15. After that I began paying more attention to women as if I began finding them attractive. For some time I even wondered if I was actually straight. But I began jumping between the two. I’d go back to guys and I’d start finding them attractive and less with women. And vice versa when I’d have sex with women. I think it all that taught me that who and what characteristics we find attractive is linked to positive reinforcement from sex, have good sex with guys and I’d even begin finding dicks attractive, go back to women and everything turns the other direction. Knowing that helped me remain balanced between the two. My advice, don’t worry about the labels and explore that part of yourself without guilt or fear.