Let me tell you one thing about confessing to a crush: do it yourself.
Sure, 99% of the time you won't have the balls to be near them, but it will save you some trouble later on. I wanted to ask out this girl, so I asked her friend to tell her I loved her and if she'd go out with me. I waited 10 minutes in a corner waiting for the "messenger" to come with the outcome. She said something vague, like she isn't into girls now. So a day later I told my crush about how sorry I was and it was so awkward. She was being silent but really cooperative. We're friends now, but still. I wish I could tell her straight so there's no misunderstanding.
Also, an advice for gay crushes: make sure you know that s/he's attracted to your gender, and vice versa. It saves heartache later on, and makes it so much less awkward when confessing. I didn't know my crush's orientation until after my confession, and I gotta say, I really regret not telling her/asking her about orientation.