First I would advise you, don't say 'I am bi' or 'I am gay/lesbian'. Those are labels that the enemy uses to get people to agree with what he says about them and to give him authority to push desires and identity and pain in their lives.
Death and life are in the power of the tongue, And those who love it will eat its fruit. (proverbs 18:21)
Your tongue has power and what you say about yourself has power, because you were created in the image of God to be in dominion over the earth like adam and eve. So agree with God and the Holy Spirit, not the enemy and the unclean spirits.
The second thing is not to judge yourself. The reason I say this is because, as christians the enemy throws a lot of accusations in the spirit realm to condemn us and weaken us and shame us so that we hide from God like adam and eve did in the garden. We need to go to God as children, as we are, so God can clean us up, not wait til we're perfect. As we continually go to God with our issues, God gives us what we need and we know we have his approval, his grace and his mercy. Relationship with God comes before all the things we think we need to be. It makes us able to be righteous.
I care very little if I am judged by you or by any human court; indeed, I do not even judge myself.My conscience is clear, but that does not make me innocent. It is the Lord who judges me.Therefore judge nothing before the appointed time; wait until the Lord comes. He will bring to light what is hidden in darkness and will expose the motives of the heart. At that time each will receive their praise from God. (1 corinthians 4:3-5)
The enemy will try to use condemning spirits to cause us to judge ourselves and accept shame and to hide. Even if our hearts condemn us we need to let God be in authority of judging us -- and his judgement is that we are to receive grace if we trust in his son.
I've written more on sexual desires and what homosexuality is, spiritually, in other places. If you want to see it I can show you, but this is already a lot to think about. Bless you sister, it's ok to have problems as long as you let God have your heart =] learning to trust God that way is part of growing up in the spirit