I don't understand what went wrong?

I recently had a argument with my boyfriend of 1 year (serious relationship). I wanted to address some of the sadness that I was feeling about small things pertaining to our relationship. I just really needed to vent and reach some sort of resolution. I thought it would be reasonable to address it directly and talk to my boyfriend about it since I love him alot. -But he got so frustrated with me. He said that all our arguments (we've had 2 big arguments plus this one in the 1 year we dated) were all caused by me dumping too much on him. He said that he wasn't equip to handle the things I was trying to share and that I should see a counselor or someone else that could deal with my problems. He also stated that the things I brought up were unusual (such as feeling like I couldn't talk to him about things) and that I should feel lucky that he's so patient, otherwise he would have left me. I just wanted to tell him why I was sad, but it blew up into him telling me how frustrated he was since with me and my feelings. He even said he no longer is sure of our future because of all the arguments 'I' was starting... He told me he needed time away from me, but that he still loved me and he wasn't breaking up with me... I don't know what to think. I didn't want any of this to happen, I just wanted to talk- I apologized because I understood that he was frustrated, but he just kept reiterating how I was at fault for causing these problems and that I need professional help. I don't know what to do, I love him so much yet I feel so wronged and unloved. I just wanted him to listen and be sympathetic. The worst part is that I still love him with all my heart and my hope for our future is still there, but I'm hurting like I've never hurt before. I don't understand what happened... Please someone help me- I don't know what to do or feel-