Recently, after I got out of a straight relationship, I really don't know why, but since then I started to like girls less as time goes by... I still feel attracted to women, but it's just that I don't know a single interesting woman who's not taken already (that's 0 out of 2 or 3 that are JUST friends).
I always liked big muscled anthros in games and such (yeah, even in my childhood, when I just thought they were REALLY COOL), one year before my puberty I started to fall in love for some of my teachers (all of them were women, I still had no insight of homosexual attraction). I just got to admit I was Bi some months ago, when I broke up with my ex-girlfriend because of our "unilateral relationship" in which I were the only one who cared for it. Some weeks before I broke up, I played with some friends of mine, one of them being a Bi and the other being straight. It looked like an innocent roleplay, then I turned it into some kind of Yaoi Fanservice in MSN Chatgroup, me and my Bi friend fighting for the straight guy's attention (none of us knew each other's sexuality for sure, and I didn't care for it, I was just playing, I thought). Then I broke up, when I just couldn't stand that girl anymore, and that Bi friend of mine stood by my side, when no one else did console me. He was always saying things that got me confused, like when I said "I'm looking for a girl who likes things I like, RPG, games and such..." and he replied "Well, I am here!", some times I even doubted he was a guy, because I was so close-minded at that time that I couldn't bear imagine to have a boyfriend, even if I liked so much to look at furry gay art, or gay porn on sites on the web.
My family is always saying things like "I'd prefer to have a whore for a daughter than a gay son" or things that makes homosexuality look like an "UNFORGIVABLE SIN" or some kind of illness (or even the act of devils possessing their bodies, that's surely a pretty crazy way of thinking about it). What matters is that I fell in love for that Bi friend of mine, maybe because I was feeling all alone and such, and I misplaced a strong friendship for love, but in the end we were each other's boyfriend for some time.
Things didn't go very well after a few weeks, as he was going pretty bad at school, and I could barely talk with him, so I felt abandoned. I met someone who quickly became so important for me that every time we talked I felt like I had found my other half, my soul-mate. I tried to lie it to myself and everyone else, but I fell in love for that guy, I just didn't want to cheat on my boyfriend, I even had the crazy idea of getting away from them both, disappearing from their lives, but that other guy made me open my eyes to reality, and helped me make up my mind.
When I had the opportunity to have a serious conversation with my boyfriend, I told him exactly how I was feeling, and in the end he told me he was passing trough harsh times at school, about his low grades, and the friends he was losing. I felt even worse, like if I was the reason for it to be happening to him. It didn't took long until I decided to be that other guy's boyfriend, and I broke with my Bi friend, we are still very good friends (and he still says things like "your virginity is mine", and things that makes me think he still have hopes for we making up again).
Sorry for making this so very long, but it's not over yet. As soon as I felt comfortable with the idea of being Bi, I told one of my friends (a straight guy), for my surprise he didn't try to kill me, as a I thought he would. And then on, I felt more and more free to tell my friends that I am Bi. Actually, the only ones who don't know of my sexuality are my family and some "not so important now" friends. My sister does know, I told her about it and practically ordered her to keep it a secret form our parents and other familiars.
Well, I am pretty comfortable with being a Bi, because in fact I feel attracted for both men and women, although I am quite picky with what exactly attracts me, like red-haired girls, or older-looking guys. I decided to tell my parents about my sexuality only after I get a place for myself to live on my own, or with friends, or even with my current (and if it continues as is, my definitive) boyfriend so that I can (if necessary) say in their faces I can be whatever I want and I can handle myself pretty good with or without their approval.