I've been best friends with this guy for about 5 years, starting in high school. We're both in college now and despite always going to different schools, we kept up a very close relationship. The past few months, I was diagnosed with a serious illness and had some other family issues going on so I was very stressed all the time. I told him that I needed him to be there for me (not that he had to come and visit just that if I needed someone to talk to that he would be available). Everything was going fine, but I was very stressed out given the circumstances and I would sometimes get annoyed or upset with him when he wouldn't call me back or text me back because I had been having a rough time. I always apologized for getting upset at him and because we were so close he seemed to be okay. He was very supportive and promised me that no matter what happened he would never abandon me (I don't have a good relationship with my family--my parents are divorced and my dad is not involved in my life and my mom is busy worrying about her own problems). About 2-3 weeks ago I confessed to him that I liked him and he told me not to worry about it because he had known all along. He also asked for me to give him a few weeks of space which I agreed to do. For 3 weeks I didn't call or text him. Yesterday I called to check in on him and see if he was still upset with me or not but he basically told me that he's done with our friendship and doesn't want to talk to me for a year or so. He said he would give our friendship another chance but when he's ready but he didn't know when that would be. I then asked him to say goodbye to me and give me a hug because he is leaving for a program somewhere else next semester. He refused to do so and said that seeing me would make him feel guilty. He also told me not to send him his christmas present because that would make him feel guilty too. He was also very rude and yelled at me and spoke to me in a way that he never has before. I don't know what to do, I've tried calling, texting, visiting but he doesn't want anything to do with me. Given the circumstances behind why I was getting upset I thought that he would be more understanding and he seemed like he was. I don't know what happened in the past few weeks when we weren't talking that suddenly instead of wanting a few weeks of space he wants nothing to do with me. This guy was like my brother and more. He is the only person who understands me and I don't want to lose him. I don't really know what to do other than give him some time to clear his head? I would appreciate any advice

Leave him alone. When a person ask for space, you have to respect that.
Maybe he wants a relationship with someone else or wants a life apart from you.
Leave him alone. I'm sorry you are going through what you're going through, but you must respect his decision.

Give him the space he NEEDS and has made clear he wants.
We don't know how serious your illness and problems were when you were demanding and needy or how awful you were, but there's no need to explain. He wants a lot more time off.
I took care of a boyfriend for 18 months of chemo and radiation and he was mean, mean, mean. Angry at the world and I got the brunt. I told him I'd be leaving him when he didn't need to be driven places and taken care of anymore, and I did so. If I hadn't, I would have been mean back, petty and vindictive and vengeful. We became friends again, but not lovers, and are to this day. That was over 30 years ago.

I think you didn't give him space to know what is his own mind , making you worry about your proplems and tell him to be there for you , it sounds selfish for him , if you would let him know what is own mind or what is going on with him it will be cooler ,I think you got to try and not give up and ask him where did I went wrong , is there is any thing you want me to tell me, try that one it sounds nice