I identify myself as a bisexual male. Although it hasn't always been that way. I know this may sound silly, but it's partly thanks to the brony community that I discovered my bisexuality. I'll explain shortly. You see, for about 25 years I've identified as straight. Although, over time I've known I've developed a curiosity. Of course, back when I used to be in school (elementary, middle and high), being anything other than straight was considered a "bad thing." You could even hear it in the use of the word "gay" in a negative context or any pejorative terms that meant the same thing. Some I'm ashamed to have used when I was younger, but today I will never ever say. I managed to get myself out of that admittedly stupid habit a long time ago.
When I think about my past; my thoughts, some actions and experiences, I can definitely see how I may have been bisexual all along, but somehow unconsciously suppressed it. Probably because I was surrounded by the idea that "straight is normal." Since I was a kid, the general attitude toward any sexuality outside of heterosexuality has become more accepting. By this time, I began to consider myself straight, but curious (so, "bicurious"?). Only because I never really had any physical attraction toward guys, but was curious about certain same-sex acts.
Now, where does the brony community fit in, in all this? Well, I've always been an open-minded individual. Never have been homophobic. Never thought being anything other than straight was wrong or weird, once I was old enough to know better. However, I never ever even considered the possibility I could be anything other than straight. My first relationship was with my girlfriend in high school, which only seemed to further convince me I cannot be anything other than straight, as I enjoyed our relationship very much. It was one of the happiest times of my life.
It was not until I got into a very serious discussion about sexuality with some fellow bronies over Skype that I started to consider the possibility. I can't really go into the details of it as it'd break the forum rules, but basically the things we discussed opened my mind even further. That's when I looked into my past (those experiences I mentioned) and thought, "Maybe I am bisexual." After which I noticed something in me had changed, granted over time. I don't want to leave the impression it happened overnight, "Straight -> Skype conversation -> bisexual." It wasn't like that, but over the course of months I've noticed guys more, even some I thought were pretty cute. My attraction to women hasn't changed at all. I even had an online same-sex relationship for a while, but for certain reasons that failed in the end, which was sad. I really enjoyed it while it lasted though.
I don't even know how I'd approach starting a real-life same-sex relationship. I have enough trouble trying to get an opposite-sex one. XD
Speaking of real-life, nobody knows I'm bisexual. As far as anyone that knows me, I am heterosexual. The main reason is just because the topic of sexuality rarely ever comes up. It'd be awkward for me to just wave a flag (The bisexual flag, of course) and yell, "I'm bi!" Yet, I did somehow hint it toward my mother once during a phone call. Somehow we got onto the subject of sexuality. I said to her something like, "Mom, just for laughs, how would you react if I turned out to be bisexual and brought a boyfriend over when I visited you?" Her response was very pleasing to hear. All she said was, "It wouldn't bother me, or your father, at all. If that's what made you happy, that's all that would matter to us." I still didn't have the guts to admit anything, but I at least knew that was possibly one less thing to worry about, in case a serious discussion about it comes up one day. It probably won't anytime soon, though. Unless I actually do get romantically involved with a guy in real-life. Then I'll have to admit it.
For the record, I'm not ashamed of it. In fact, I'm quite happy to identify as bisexual. It actually feels right for some reason to me. The only reason I choose to keep it to myself is just because, well, there are obviously people out there who would disagree with it and may try to vilify me or something like that, and that's not something I wish to deal with so long as I don't really need to. Plus I'm just a very private person in reality. In other words, if nobody asks, I won't tell. However, if I ever do get into a real-life conversation about sexuality, I'll probably just say I'm bisexual and make it out to be no big deal. As it shouldn't be a big deal.
I've also noticed another thing. Back when I was younger, the thought of two guys together kinda disgusted me. Yeah, just like the heterosexual stereotype, two girls didn't bother me at all for some reason. However, today, I think all three; two men, two women, and a man and a woman, all three of these relationships are equally beautiful. Love in itself is beautiful to me, no matter the sexuality.
So I wouldn't say I became bisexual. Rather, I think it's more appropriate to say I discovered my true sexuality. Heck, I went through a period when I thought I was asexual, only because I just didn't find anyone attractive. In fact, relationships in general just put me off. I think that was just a period of lack of interest, though. As later on, I started getting interested in seeking out a relationship again, but with little success, but that's an entirely different subject. So there you have it. 25 may have been a little late, perhaps, but I've read stories of people discovering this sorta thing quite a bit later. So, I guess it could be worse, and who knows, maybe I'll discover something else about my sexuality later in life. Only time will tell. So maybe I shouldn't say "true" yet.