My sexual orientation seems to switch depending on which sex last broke my heart.
Dated a guy I fought with constantly over philosophy and politics and damn near everything else, then had an incredibly long, drawn-out, and messy break-up resulting from my inability to respond correctly to reverse psychology [he wanted asspats, so he asked for criticism, which I gave].
Dated a girl who hated herself and lied all the time. Eventually managed to help break her out of that cycle, but we needed to break up before that could really happen.
Dated a 16-year-old who didn't lie to me or hurt me or anything. Thought he was wonderful in every possible respect...but it was long-distance, and he started dating someone IRL because he somehow just couldn't bring himself to say "I'm already taken".
Now with the aforementioned girl again.
But I guess if I had to pick a word, I'd say I'm homoflexible, since I'm physically more attracted to guys and the only sexual things I've done have been with guys.