My older half-brother is gay... my older half-sister is lesbian. Oddly enough, I came out way before they did... she came out to my brother and I because we saw her in a gay bar with a girlfriend... he came out to me after 4 failed marriages... and that phone conversation was a little... odd...
Him: "You sittin' down, bro?"
Me: "Yeah..."
Him: "Got something to tell you and I hope you won't hate me."
Me: "Like what?"
Him: "I... I'm gay."
Me: "'Bout damn time you figured it out!"
Our dad was a southern missionary baptist preacher that made Archie Bunker look like a liberal.

We never told him... we were afraid of his .38 police special and the fact that he probably would have used it on us...
I also have another sister who's straight and more of a gay activist than I am, and that's saying a lot!