So I have no idea whether: -He was actually in denial to himself and didn't realise he was unhappy until BD (this is what he claims)
If you examine depression, part of it is denial. So yes he has always been unhappy but has no clue how to get out of his depression and thinks that it is anyone elses fault other than his own. You being a possible candidate in that pool.
You didnt break him and can not fix him.
Study more about depression and some of this will make more sense.
