Very confused.

I don't know if I'm bi. I get a bit turned on if I see other girls wiggle there bum but only if it's big and round and juicy and if they've got massive boobs. I'm unsure if I could do anything with a girl. I haven't tried anything as I'm 15 but i think I'm still a but intrigued. I've discussed it with my boyfriend and he said he wouldn't mind but I know why he wouldn't😅 but I'm so confused and I was wondering if anybody could help me. I don't know how you could help me but advice would be very much appreciated. Thank you.