I'll have to say Osuche is pretty well spot on with her comments. I agree about open lines of communication with your kids. I know with my own two I try to address issues as they come along. My son had occasion not too long ago to tag things as being gay. "Those pants look gay" "He acts so gay" anyhow. I finally asked him why the need for making those observations? He really didn't have an answer. I said "Son, think about this. You don't judge people by the things they do in private. Try thinking more about how they treat you. Gay isn't bad, it's different. Different isn't always bad. Don't just pick your friends because they think like you do and don't always accept the things everybody thinks. You can learn a lot from thinking for yourself."
When my daughter was 15 we were riding along a city street and a man was making an attempt to move a rather large Air Conditioning unit alone. His method of moving this monstrosity was to "hunch" it along. Seeing this unusual sight, I reached over to cover my daughter's eyes and said "Oh my God, No!" Don't look Baby... why would he do that in public... that nasty man!" Of course she struggled even harder to see what I was shielding her from and when she finally saw she burst into a nervous giggle. As odd as that little thing sounds, it was really my first acknowledgement that she knew and understood sexual things. It sorta made talking about it easier between us. She's a pretty smart girl and I'm proud of her, both of them as a matter of fact. One friday night after a football game I met my daughter and her best friend at one of those all nighter greasy spoons for a bite to eat. Her best friend decided she was going to smoke me over by telling me a big tale to see how I'd react. As I stirred my coffee she very casually said "You know M and I are lovers don't you? We're lesbians and have been together for over a year." I calmly finished stirring my coffee and said "Thank God, now at least I don't have to worry about her getting pregnant!" Poor girl, I think I shocked her... she started mumbling and backpeddling. M reached over and whacked me. LOL Of course they were just kidding me but my attitude just surprised them. Now though, they're neither one afraid to make comments and actually listen when I'm not making corny jokes. It might not be the best way to go about things but I've been fairly satisfied with my results.

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As to marriage or celibacy, let a man take which course he will. He will be sure to repent - Socrates

Love is not looking in each other's eyes, but looking together in the same direction - Antoine De Saint-Exupery