We all have our own prejudices about things, I know I have. You can change. Over the years, I've changed my view on some of them and you can too.
I've always said that I wouldn't date someone who's bi. After reading numerous posts and a few emails with Tim, I am his editor after all, I would.
The key? Look at the gay, bi-sexual, straight, male, or female as a person and human being. Not as a classification of some type. It can help you become a little more open minded about things.