Coming Out?

Hello. I am a high school student who has just recently completely accepted the fact that I'm gay. I have a lot of anxiety, much more than the average person, so this has been eating away at me for months. I think that if I tell someone, it might ease the stress a bit if it goes right. If it goes wrong, well, I have no idea. I have a friend in mind. While I have many “friends,” he is the one I trust the most. I've had a crush on this friend for about a year now, and while I'm getting over it, I still kind of like him. I don't know if he's gay or straight or even how accepting he is of this matter. I only plan on telling him that I'm gay but will urge him to ask questions. (I had a friend come out back in Middle School before I was even aware that I was gay and I had some questions that I wanted to ask but never did. I want him to be free to ask me anything without thinking he might upset me somehow.) He's coming over tomorrow and I plan to tell him then. Should I tell him towards the beginning so he can ask any questions he might have, towards the end so he can be given time to think and leave if he's uncomfortable or somewhere in between? And how do I tell him? If he asks if I like him should I lie or tell the truth? I'm really nervous and really excited at the same time. How do I make this go right? Thank you.