Bi-curious = a gay person who has not yet come to the conclusion that they are gay.
Yeah. I don't think I've ever heard of someone being "bi curious" and then come to the conclusion that they're straight.
You must not be friends with many women.
Well it's different for women, obviously, but we're talking about Atlas Forum here.
e: The old adage of "bi curious men and women all end up with men" has proven to be true with near 100% accuracy in my own circle of friends.
I actually know a couple bi curious women who ended up with women, FWLIW. I do agree that among men the tendency does seem to be that they end up just plain old gay.