I miss him terribly and I cant get over him

I was seeing this guy for like a year, we broke up because he knew he wouldnt be able to sustain a relationship as he was dealing with the death of his little brother.. I'm so sad and I miss him because I got attached to him and I still am attached to him. Everything was going great between us, it was almost too perfect to be true. I miss him omg. He told me that we should keep our distances because he knows he'll hurt me since he's now becoming cold hearted and he doesnt want to care about anything or anyone for that matter until he is ready. He says he doesnt want to see me, that it's nothing personal since he doesnt want to see anyone , he might be depressed. I don't know really. I feel like I have to give him space in order for him to grieve, but I miss him terribly. I'm fighthing the urge to call him and text him, but I feel like I've done too much already. Will he come around with time? Since he says it has nothing to do with me and everything to do with him and this phase he's going through, he says he's still interested in me but he knows how i feel about him and he , appreciate and care for me, he says I'm the only girl he ever felt something for , but he doesn't want to hurt me and he knows he will because of his decision not to care. I know I have to move on, but damn, its been months and I still think about him all the time and care deeply for him. Any advice?