I am a Bahai and I had struggled with the idea of whether or not I was gay, straight, or bisexual and I realized that for myself I am straight. I still find some men attractive, but I cannot see myself in a relationship with another man. No one knows it about me and would be surprised because I am what you might call a shining example of a "heterosexual" man. I truly believe that whatever you do in your own life is between you and God, and you never ever as a Bahai have to worry about what others might say.
I know it's hard because you do not want to keep your sexuality a secret, and I wish I had a more concrete answer to give you, but know that even if you do not remain a Bahai in the sense of your administrative rights keep the message close to your heart. For me the Bahai faith is the most beautiful and well-rounded message there is. God bless.