A sincere bisexual love triangle in shounen?? Who would be so bold as to publish—oh, it's Gangan, nevermind, that doesn't count.
My snark aside, though—I might even be persuaded to read this, despite absolutely hating love triangles and especially painful ones like this would seem to have to be, just out of respect for the sheer astounding rarity of any manga actually taking the possibility of bisexuality seriously on an emotional level.