questioning my sexuality

when I was in 8th grade i fell in love with my best friend, Sophia. I felt like I could tell her anything in the world and when she brushed up against me or nudged me I felt tingly and warm on the inside. of course i didn't know what it meant. I've only ever felt that way around two other people since then: a guy named Cody and a girl named Nora. my boyfriend that I dated for 4 months I didn't even feel that way around. idk if I'm bi or lesbian or what. i feel like I need to experiment and branch out before I decide to tell anyone anything.