Hi jd123, I think this is a very difficult situation for your boyfriend and doesn't know how to cope with his emotions. I am not a man, so cannot speak for them, but I think that most of them finds it hard to be seen when at vulnerable state, as you may see him as weak. I know that sounds stupid but it isn't. You just need to be patient with him, do not push on him, let him sort it out. Be there for him for when he is ready to share this with you. This will  happen, you just need to give him some time...