Hmm... I think you're too young to participate in any type of relationship, not mental and not physical either.
Stay away from these things until you become older, maybe 16, 17 or 18, it depends.
I don't know much about bisexuality, but definitely, I do NOT hate people just because of their sexaulity. What can you do with that, after all? I believe it's made by the hands of the God. What can human beings do with their sexuality? What will you be, gay, lesbian, bisexual, transgender, heterosexual... It's decided by the God, himself. There's nothing to do with it at all!
Be what you are. Hope my advice helps you!