Nope, I certainly wouldn't. =P That'd be rather weird of me, if I did. .-.
I know how it can be, your parents not knowing about your sexuality. It drove me nuts for a long time about me not telling my mom... But it didn't go so well when I did tell her... =/ I did feel a lot better about it after that, though, since I finally knew what she thought of it.
My advice is if you live in a really religious family, then I'd wait until you're older to do it, especially if your family has said things about bisexual/homosexual people...
I wouldn't tell them until you started going out with someone of the same gender, because why make them worry over you (if they do) about you being bisexual?
No. A chocolate-covered strawberry is still a strawberry, a homosexual is still a human being. Unless they acted like a *censored.1.1*, i wouldn't treat them any different.
Sure, if they're discreet about their sexuality, than I'm fine with it. If they go around whoring for attention than of course I'll treat them differently. One of my best friends is actually gay, and he's a good person.