I had a gay experience with a friend and now he hates me, why?

So a little bit of detail about me and the story, I am a gay guy. I joined a scouts group and was part of the age group that was called "Explorers". I don't know if anyone else had experiences with this but I found that being gay and in the scouts is something that's frowned upon, so needless to say, I tried to keep my homosexuality a secret. I'm one of those "Straight-acting" gay guys so that seemed to help for a while but then I guess by the end that didn't help. But anyway, to the story. So I joined when I was 16 and at the time I was trying to convince myself that I wasn't gay, so I thought doing the most manly thing I could would help, and that was joining scouts. My friend talked me in to it and told me that he would introduce me to everyone. As the weeks went on the actual scouting became boring and I was already hearing news that people were talking behind my back and accusing me of being gay, but I didn't care, because I only went for one reason anyway, my friend Cory. I'm not sure how but we became good friends. I'm not sure if he was attracted to me but all I knew was that I wanted a new friend, and I found that in Cory. So a few months go by and we are preparing to go on a winter camp. Only three of us out of the 12 end up going because the rest are pussies, and I saw this as an opportunity to spend some quality time getting to know my best friend better (He liked to share himself out with the others in term of friendship). But anyway, fast-forwarding to that night, its freezing, bare in mind this was a December/January camp in Britain, so Cory and I were sharing a tent. Obviously as guys do we ended up talking about girls. He was bragging about everything he had already done because he was a year older and I (obviously lying) told him I had done some things too. At about 1-2am we decided to get some sleep, but like I said it was freezing and I ended up shaking like crazy. One thing led to the other and we ended up spooning "For warmth". Me being a gay guy got a boner. And then the weirdest but most exhilarating thing happened to me. I'll save you the gory details but we did some oral stuff and used our hands a lot. This set-up may seem unnecessary but I'm stating it to show you that he came on to me. I'm sure I gave him no reason to believe that he owed it to me or that I was coming on to him. Anyway we did this for the first night and then one final time in the evening when we were "taking a nap". Now this is where I get confused. After we did it for the second time he just completely changes and shuts down. He acts as if I don't exist but when he had to take notice of me he treated me like a child. Before the second time and after the first he had been treating me fine, being nice to me, we walked around together talking and generally having fun. When It came time to go home we had to car share but the whole journey back he didn't speak to me, not once, whereas when we were first driving down he had been talking to me the whole time. Then after the weekend he would SnapChat me on occasion asking me to exchange pictures with him but then when that was over, nothing. I assumed that maybe he was trying to figure himself out and I was more than happy to oblige because at the time I was figuring myself out and trying to find what I liked. In the end I stopped going to the scout group because I had had enough of being spoken about behind my back (And by the end I was openly being called "Gay" and "Gayboy" in a derogatory way) and I was afraid that I was slowly falling in love with someone who hated me for something I had thought we both enjoyed.A year has gone by with neither of us talking to each other. I accepted the fact that I am gay and loving it. I've told friends and some family and I'm happy with who I am. In a way the entire experience has helped me metamorphosize into who I was really supposed to be, but even a year later I still have the doubt in my mind. Why does he now dislike me? We have messaged each other since but when we have they have been fleeting conversations with him refusing to talk about it and pretending as if it never happened. He pretends as if we are fine but I can tell he is still wary of me.I'd really like peoples opinion on why he suddenly disliked me? Did I do something wrong? You may think I'm stupid for asking this a year on but I believe knowing what I have done will help me in future relationships/encounters/experiences and maybe even help us restore our relationship as friends. Also If you have any questions ask away, thanks for any help :)