Thanks for the advice, everybody. Dandylion, I have already looked into the book.
We have been seeing each other for about 3 months (so still quite new). Things had just been progressing remarkably well up until this point, which is what makes me want to tough it out with him. I honestly just have absolutely no clue what he is going through, and can tell that he is not quite to the point where he is very receptive to discussing it very much yet. So I definitely don't want to push anything. I just want to know the best way to be there for him, and it sounds like that would be patience and not stressing him out about it.