I can't believe that I am actually answering this. Ha, that's ironic. Three months ago, I was asking the same question. Now, I have gay friends coming out of my ears!
I joined several gay men's groups which I found online and through my local LGBT center. I just started talking to everyone and coming out to a lot of people. They would tell me that they knew this person or that person who is gay.
Well, I met a small group of guys through the brother of my office manager, and now one of them is my boyfriend. Everyone is right when they say that when you quit looking for it, it comes (I could make a pun of that, but I'll refrain.
All you need is to know one gay or lesbian, and they will introduce you to more who will introduce you to even more.
Polish up smiling and laughing and looking people confidently in the eye. Be interested in them, share your stories and interests.