I think I'm bisexual but I can't tel…

I think I'm bisexual but I can't tell if my crushes on girls are actually crushes. Is it normal for straight people to think a girl is really really pretty and then look through her instagram to find photos of her? I know I do that with guys too. With my irl girl crushes I got really excited whenever they touched me and I thought about kissing them when they were close so does this mean I had a crush or was just curious?

Honey, you’re super bi, welcome to the community. 

-mod Annie