Seems that way at the very least.
In my circle of friends and acquaintances we have a lot of girls, my best friend is also a girl. We play a lot of "I have never...", and ALL but 2 girls, out of 15, have at the very least made out with another girl, and not just as a dare but because of actual attraction. 8 of them have also gone "the whole way". Most of them, though, have boyfriends. Some of them have had girlfriends in the past.
Compare that to the guys, where only 1 of us have done stuff with the same sex, and he's homosexual which explains it.
Also, the term "In my teens I was confused and was exploring my sexuality"? Only heard it from girls, never guys. Every guy I know was 100% certain if he liked weiner or taco when puberty hit.
Obviously this is far from empirical research, but it still got me curious. Is there any evidence that suggests that girls are more prone to being, at the very least, bisexual compared to guys?
Obviously there's nothing wrong with it, I'm just curious because it does seem to be such a huge difference between the sexes and bisexual tendencies.