am i a lesbian? I had major girl crushes

I'm really confused. Am I a lesbian Growing up I always imagined myself with men. I had the biggest crushes on male celebs. Always imagined myself going out with them etc. there were guys on my bus who I found super hot even though my friends didn't and I would crush on them, imagine being their gf etc. I was bullied by guys so I was really self conscious. At age 15 i formed a bond with female friend that was the best friendship I have ever had. Age 16 she initiated a sexual relationship with me, I was a bit hesitant but she said it would be good practice for boys (only ever kissed one boy) it would last for about 8 months. I enjoyed it a lot bc it was fun and exciting but I never orgasmed because I don't think inward ever really aroused. I didn't feel unsatisfied by not orgasming bc I don't believe I was turned on. Now I know for a fact kissing guys can get me wet down there and make me feel aroused. And I always imagine myself with hot guys. when daydreaming about things I've done with guys I get little butterflies and feel kinda aroused. I'm just confused as to why i let it happen with her. I cared about her so much she was the closest friend I have ever had. We aren't close anymore though because I feel like I grew up and she didnt. I never imagined myself with a girl and to this day I don't find myself thinking about being with one I should also add, I had major girl crushes but it was more like oh I love her hair i had it. Never omg she's so hot I wanna kiss her. Am a a lesbian in denial or what?