HELP! SERIOUSLY I NEED HELP!
I only made this account because I didn't know where to ask for help, and from what I've seen throughout my years of stalking this site, people can give great advice.
Well, when I was thirteen (three years ago), my friend told me he was gay. I was really sad, because I really, REALLY liked him, but I still decided to support him (even with a crush and being a Christian). I thought that throughout the years I'd stop having a crush on him... but it got worst. Since I, his sister and brother, and another friend of ours are the only ones who know about his preference, he began to trust me even more. And we hung out more, and... well, you can guess why I began to like him even more. 
I never told anyone I like him. Especially after he came out. Well, a month ago, he began to act really weird around me. He'd turn quiet and couldn't look me in the eyes. He'd already been acting weird before, but it was until a month ago that his behavior became obvious. He was not like that to anyone, so I thought I'd done something.
Then yesterday, I dropped by his home and we had a lot of fun. It was like before. Until he kissed me. Yes, you read right. He KISSED me. Out of the blue. We were just watching funny videos from his laptop, when he told me he wanted to ask me something. I turned to look at him, and he began to lean in. I did not know what in the world was happening, my brain didn't tick until he planted a kiss on my lips.  I did not know what was going on, and I didn't throughout the entire afternoon I spent with him (which was extremely awkward).
I saw him today. We tried to talk and all, but he wouldn't look at me, and occasionally blushed. Later on, I confided to the other friend who knows about him being gay that he'd been acting weird lately. She said that he was confused, since he'd told her a while back that he thought he might also like girls. 
You can probably imagine how confused I am. I don't know if:
a) He didn't tell me he might be bi because he might like me.
b) He doesn't trust me enough to tell me, and he just kissed me to see if he was really bi.
What can I do? If it's the second, I want to prove that I am a trustworthy friend. If It's the first, I'd like to talk to him.