Will begin bi-sexual stop me going into heaven?

I am 15. And I am bisexual (I prefer men more though). I am a Christian, I do try hard to be a good samaritan. I do not judge people, I give back alot without begin skeptical, I accept everyone, I pray for everyone (even those that do not like me). So I try my best to be good, but I read over and over again that anyone who is gay will not see the gates of heaven. Is this true, I know homosexuality is a very controversial subject. Thanks for answering.