Am I gay?

I've had relationships with guys who were good guys, but I never felt into it. I never had "that feeling" and I could never really return the feelings they had for me and for awhile now I've noticed an interest in girls. It started with one of my best friends who was really flirty with me and I soon developed major feelings for her, but I've gotten over that now because she is straight... I think. Anyway, I get butterflies for this other girl at school that I barely even know, yet I've never truly admitted to myself that I'm gay. So as cliche as this sounds, do you think my absent feelings for boys and my sudden intriguement for girls is just me coming to realize that I might be gay?