Need to write to be able to vent silently

ve been with this man, on and off for 3 years, due to his clinical depression. The last year things got better, spending time together actually doing things together. About 2 months ago I notice once again a change in his behavior and 2 days ago he told he is not fit for a relationship, that he needs to get better but he needs to do it on his own. I've always been supportive and understanding, I dont hold back though, if I was hurt or sad due to his behavior I did tell him. He says he doesnt want to hurt me, he dont want to be responsible for my pain. I've tried to reach out but this time he is determined that is better this way, he doesnt even want to see me. He says I need to take care of myself, which I agree and I do cause I can't let his behavior bring me down. He wants me to leave him alone dealing with his depression. I told him that we could work it out together but he's not changing his mind. I know he won't talk to me or reach out, its always been me reaching out, trying to stay in his life. I've begged him not to push me away but like I said he is convinced that this is the best for both of us. He says he wants me happy and he can't make me happy right now. I dont know what to do or said besides stepping back, giving him time, live my life. Before I always have this inner hope that things will end up working out but this time it feels final. It gives me some peace to know it wasnt another woman but I still feel numb, empty of emotion, I feel sad at times, Ive cried but mostly feel numb. I know it too shall pass, makes me sad that I will eventually be a fading memory.