Lonelystoner, I'm so sorry that you're goin through such a hard time because of your sexual orientation. I think part of this is because your sexual preference isn't understood. I also think part of it is because you have encountered some bigoted people who treat you poorly.
I was wondering if in your area you have any bisexual support groups that could help you out with this. To find one you could contact your nearest gblt center. I sure they can be of help.