Homosexuality isn't necessarily about having sex; just like heterosexuality there is an emotional aspect to it which can be independent of sexual activity.

Why do some people feel the need to assert their heterosexuality at the merest mention of 'gaity'? Given the variety of conclusions which can be drawn from it, I can't see it really does them any good whatever they actually are.

99.99% of the time it doesn't matter to me what people are, and I couldn't care less what they think I am.

Don't they test donated blood for disease in the U.S.?