Hm...I found this to be a very interesting article. And, in a way, I can relate to it: within the past few months, I've been thinking that I may be bisexual. There have been points in my life where I've felt attraction to girls as well as guys. And, like the article says, it took me a great while after these fleeting fancies to realize what it may mean. And, I'm still a little unsure if I am bi or not, and am still figuring it out.
In a way it feels surreal to be adding on to my character and my self-definition even though I'm only 17; I had thought I'd identified each part of myself awhile ago and that it wouldn't change (naive as that is). For now I'm still exploring. Good article!